diff --git a/omvs_audit_report.md b/omvs_audit_report.md
index 5505a8ff..8c70ec2c 100644
--- a/omvs_audit_report.md
+++ b/omvs_audit_report.md
@@ -5,8 +5,8 @@ Subject: `pyegeria/omvs` (43 modules)
 
 | Result | Count |
 |---|---|
-| OK | 603 |
-| Mismatch (verb/path/body) | 56 |
+| OK | 652 |
+| Mismatch (verb/path/body) | 7 |
 | Missing | 288 |
 | Found in another module | 13 |
 | URL lint | 0 |
@@ -15,6 +15,9 @@ Subject: `pyegeria/omvs` (43 modules)
 
 _Review only - cross-service overlap is often intentional._
 
+- `GET /my-profile`
+  - `my-profile.py`: `_async_get_my_profile`
+  - `my-profile.py`: `_async_get_my_profile_by_get`
 - `POST /automated-curation/governance-action-types/initiate`
   - `automated-curation.py`: `_async_initiate_gov_action_type`
   - `automated-curation.py`: `_async_initiate_survey`
@@ -62,6 +65,12 @@ _Review only - cross-service overlap is often intentional._
   - `action-author.py`: `_async_get_governance_action_process`
   - `governance-officer.py`: `_async_get_governance_definition_by_guid`
   - `governance-officer.py`: `_async_get_governance_action_process`
+- `POST /lineage-linker/from-elements/{}/via/{}/to-elements/{}/attach`
+  - `lineage-linker.py`: `_async_link_lineage`
+  - `lineage-linker.py`: `_async_link_data_flow`
+- `POST /metadata-expert/metadata-elements/{}/history`
+  - `metadata-expert.py`: `_async_get_element_history`
+  - `metadata-expert.py`: `_async_get_metadata_element_history`
 - `POST /metadata-expert/related-elements`
   - `collection-manager.py`: `_async_link_saved_query_to_results_set`
   - `metadata-expert.py`: `_async_create_related_elements`
@@ -108,15 +117,11 @@ _Review only - cross-service overlap is often intentional._
 
 ### Service: actor-manager
 
-- detachAssetFromProfile: MISMATCH `detach_asset_from_profile`
-    - BODY sends DeleteElementRequestBody != DeleteRelationshipRequestBody
 - find All ContributionRecords: MISSING  (`POST /actor-manager/contribution-records/by-search-string`)
 - updateActorRole: MISMATCH `update_actor_role`
     - PATH
       SDK: /actor-manager/actor-roles/{}/update
       API: /actor-manager/actor-roles/update
-- detachPersonRoleFromProfile: MISMATCH `detach_person_role_from_profile`
-    - BODY sends DeleteElementRequestBody != DeleteRelationshipRequestBody
 - Detach a team role from a team profile.: MISSING  (`POST /actor-manager/actor-roles/{}/team-role-appointments/{}/detach`)
 - linkITProfileRoleToProfile: MISSING  (`POST /actor-manager/actor-roles/{}/it-profile-role-appointments/{}/attach`)
 - detachITProfileRoleFromProfile: MISSING  (`POST /actor-manager/actor-roles/{}/it-profile-role-appointments/{}/detach`)
@@ -124,27 +129,12 @@ _Review only - cross-service overlap is often intentional._
     - PATH
       SDK: /actor-manager/actor-roles/{}/delete
       API: /actor-manager/actor-roles/delete
-    - BODY sends DeleteElementRequestBody != DeleteRelationshipRequestBody
 - getActorRoleByGUID: MISMATCH `get_actor_role_by_guid`
     - PATH
       SDK: /actor-manager/actor-roles/{}/retrieve
       API: /actor-manager/actor-roles/{}/retrieve"}
 - detachProfileIdentity: MISSING  (`POST /actor-manager/user-identities/{}/profile-identity/{}/detach`)
-- addSecurityGroupMembership: MISMATCH `add_security_group_membership`
-    - PATH
-      SDK: /actor-manager/user-identities/{}/security-group-membership/classify
-      API: /actor-manager/user-identities/{}/security-group-memberships/classify
-- updateSecurityGroupMembership: MISMATCH `update_security_group_membership`
-    - PATH
-      SDK: /actor-manager/user-identities/{}/security-group-membership/reclassify
-      API: /actor-manager/user-identities/{}/security-group-memberships/reclassify
 - removeAllSecurityGroupMembership: MISSING  (`POST /actor-manager/user-identities/{}/security-group-memberships/declassify`)
-- createContactDetailsFromTemplate: MISMATCH `create_contact_details_from_template`
-    - BODY sends NewElementRequestBody != TemplateRequestBody
-- createPerspectiveFromTemplate: MISMATCH `create_perspective_from_template`
-    - BODY sends NewElementRequestBody != TemplateRequestBody
-- createSkillFromTemplate: MISMATCH `create_skill_from_template`
-    - BODY sends NewElementRequestBody != TemplateRequestBody
 
 ### Service: asset-catalog
 
@@ -194,16 +184,8 @@ _Review only - cross-service overlap is often intentional._
 - addOwnership: MISSING  (`POST /classification-explorer/elements/{}/ownership`)
 - clearOwnership: MISSING  (`POST /classification-explorer/elements/{}/ownership/remove`)
 - clearDigitalResourceOrigin: MISSING  (`POST /classification-explorer/elements/{}/digital-resource-origin/remove`)
-- clearKnownDuplicateClassification: MISMATCH `clear_known_duplicate_classification`
-    - BODY sends DeleteRelationshipRequestBody != DeleteClassificationRequestBody
 - setupPeerDuplicates: MISSING  (`POST /classification-explorer/related-elements/{}/peer-duplicate/{}/attach`)
-- clearConsolidatedDuplicateClassification: MISMATCH `clear_consolidated_duplicate_classification`
-    - BODY sends DeleteRelationshipRequestBody != DeleteClassificationRequestBody
 - clearSemanticAssignment: MISSING  (`POST /classification-explorer/elements/{}/semantic-assignment/terms/{}/detach`)
-- getSemanticAssignees: MISMATCH `get_semantic_assignees`
-    - PATH
-      SDK: /classification-explorer/glossaries/elements/by-semantic-assignment/{}
-      API: /classification-explorer/elements/by-semantic-assignment/{}
 - addGovernanceDefinitionToElement: MISSING  (`POST /classification-explorer/elements/{}/governed-by/definition/{}/attach`)
 - removeGovernanceDefinitionFromElement: MISSING  (`POST /classification-explorer/elements/{}/governed-by/definition/{}/detach`)
 - addGovernanceExpectations: MISSING  (`POST /classification-explorer/elements/{}/governance-expectations`)
@@ -213,29 +195,9 @@ _Review only - cross-service overlap is often intentional._
 - removeResourceListFromElement: MISSING  (`POST /classification-explorer/elements/{}/resource-list/{}/detach`)
 - addMoreInformationToElement: MISSING  (`POST /classification-explorer/elements/{}/more-information/{}/attach`)
 - removeMoreInformationFromElement: MISSING  (`POST /classification-explorer/elements/{}/more-information/{}/detach`)
-- getSourceElements: MISMATCH `get_source_elements`
-    - PATH
-      SDK: /classification-explorer/glossaries/elements/{}/source
-      API: /classification-explorer/elements/{}/source
-- getElementsSourcedFrom: MISMATCH `get_elements_sourced_from`
-    - PATH
-      SDK: /classification-explorer/glossaries/elements/{}/sourced-from
-      API: /classification-explorer/elements/{}/sourced-from
 - removeScopeFromElement: MISSING  (`POST /classification-explorer/elements/{}/scoped-by/{}/detach`)
 - licenseElement: ELSEWHERE -> `governance-officer.py`
-- getLicensedElements: MISMATCH `get_licensed_elements`
-    - PATH
-      SDK: /classification-explorer/glossaries/elements/licenses/{}
-      API: /classification-explorer/elements/licenses/{}
-- getLicenses: MISMATCH `get_licenses`
-    - PATH
-      SDK: /classification-explorer/glossaries/elements/{}/licenses
-      API: /classification-explorer/elements/{}/licenses
 - certifyElement: ELSEWHERE -> `governance-officer.py`
-- getCertifiedElements: MISMATCH `get_certified_elements`
-    - PATH
-      SDK: /classification-explorer/glossaries/elements/certifications/{}
-      API: /classification-explorer/elements/certifications/{}
 - getSearchKeywordByGUID: MISSING  (`POST /classification-explorer/search-keywords/{}/retrieve`)
 - getSearchKeywordsByKeyword: MISSING  (`POST /classification-explorer/search-keywords/by-keyword`)
 - findSearchKeywords: MISSING  (`POST /classification-explorer/search-keywords/by-search-string`)
@@ -266,10 +228,6 @@ _Review only - cross-service overlap is often intentional._
 - attachSmartQuery: MISSING  (`POST /collection-manager/collections/results-sets/{}/smart-query/{}/attach`)
 - detachSmartQuery: MISSING  (`POST /collection-manager/collections/results-sets/{}/smart-query/{}/detach`)
 - attachAssociatedSkillSet: MISSING  (`POST /collection-manager/actors/{}/associated-skill-sets/{}/attach`)
-- detachAssociatedSkillSet: MISMATCH `detach_associated_skill_set`
-    - PATH
-      SDK: /{}/actors/{}/associated-skill-sets/{}/detach
-      API: /collection-manager/actors/{}/associated-skill-sets/{}/detach
 - updateCollectionMembership: MISSING  (`POST /collection-manager/collections/{}/members/{}/update`)
 
 ### Service: community-matters
@@ -291,10 +249,6 @@ _Review only - cross-service overlap is often intentional._
 - getDataFieldsByName - with full request body: MISSING  (`POST /data-designer/data-fields/by-name`)
 - getDataFieldByGUID - with request body: MISSING  (`POST /data-designer/data-fields/{}/retrieve`)
 - createDataValueSpecificationFromTemplate: MISSING  (`POST /data-designer/data-value-specifications/from-template`)
-- detachSpecializedDataValueSpecification: MISMATCH `detach_specialized_data_value_specification`
-    - PATH
-      SDK: /data-designer/data-value-specifications/{}/specialized-data-value-specification-definition/{}/detach
-      API: /data-designer/data-value-specifications/{}/specialized-data-value-specifications/{}/detach
 - assignDataValueSpecification: MISSING  (`POST /data-designer/elements/{}/data-value-specifications/{}/attach`)
 - detachDataValueSpecificationAssignment: MISSING  (`POST /data-designer/elements/{}/data-value-specifications/{}/detach`)
 - findAllDataClasses: MISSING  (`POST /data-designer/data-value-specifications/by-search-string`)
@@ -306,8 +260,6 @@ _Review only - cross-service overlap is often intentional._
 
 ### Service: data-discovery
 
-- createAnnotationFromTemplate: MISMATCH `create_annotation_from_template`
-    - BODY sends NewElementRequestBody != TemplateRequestBody
 
 ### Service: data-engineer
 
@@ -365,12 +317,6 @@ _Review only - cross-service overlap is often intentional._
 ### Service: glossary-manager
 
 - getTermRelationshipTypeNames: MISSING  (`GET /glossary-manager/glossaries/terms/relationships/type-names`)
-- clearTermAsAbstractConcept: MISMATCH `remove_is_abstract_concept`
-    - BODY sends DeleteClassificationRequestBody != DeleteElementRequestBody
-- clearTermAsActivity: MISMATCH `remove_activity_description`
-    - BODY sends DeleteClassificationRequestBody != DeleteRelationshipRequestBody
-- clearTermAsContext: MISMATCH `remove_is_context_definition`
-    - BODY sends DeleteClassificationRequestBody != DeleteRelationshipRequestBody
 
 ### Service: governance-officer
 
@@ -397,8 +343,6 @@ _Review only - cross-service overlap is often intentional._
 - findGovernanceActionProcesses: MISSING  (`POST /governance-officer/governance-action-processes/by-search-string`)
 - getAllGovernanceActionProcesses: MISSING  (`POST /governance-officer/governance-definitions/by-search-string`)
 - getGovernanceActionProcessesByName: MISSING  (`POST /governance-officer/governance-definitions/by-name`)
-- getGovernanceActionProcessGraph: MISMATCH `get_governance_action_process_graph`
-    - BODY sends GetRequestBody != ResultsRequestBody
 - addGovernanceDefinitionToElement: MISSING  (`POST /governance-officer/elements/{}/governed-by/definition/{}/attach`)
 - removeGovernanceDefinitionFromElement: MISSING  (`POST /governance-officer/elements/{}/governed-by/definition/{}/detach`)
 - linkApprovedPurpose: MISSING  (`POST /governance-officer/elements/{}/approved-purposes/{}/attach`)
@@ -410,10 +354,6 @@ _Review only - cross-service overlap is often intentional._
 
 ### Service: lineage-linker
 
-- linkLineage: MISMATCH `link_lineage`
-    - PATH
-      SDK: /lineage-linker/elements/{}/{}/{}/attach
-      API: /lineage-linker/from-elements/{}/via/{}/to-elements/{}/attach
 
 ### Service: location-arena
 
@@ -433,78 +373,13 @@ _Review only - cross-service overlap is often intentional._
 - updateRelatedElementsInStore: MISSING  (`POST /metadata-expert/related-elements/{}/update-properties`)
 - updateRelatedElementsEffectivityInStore: MISSING  (`POST /metadata-expert/related-elements/{}/update-effectivity`)
 - deleteRelatedElementsInStore: MISSING  (`POST /metadata-expert/related-elements/{}/delete`)
-- getMetadataElementByGUID: MISMATCH `get_metadata_element_by_guid`
-    - PATH
-      SDK: /{}/metadata-elements/{}
-      API: /metadata-expert/metadata-elements/{}
 - getAnchoredElementsGraph: MISSING  (`POST /metadata-expert/metadata-elements/{}/with-anchored-elements`)
-- getMetadataElementByUniqueName: MISMATCH `get_metadata_element_by_unique_name`
-    - PATH
-      SDK: /{}/metadata-elements/by-unique-name
-      API: /metadata-expert/metadata-elements/by-unique-name
-- getMetadataElementGUIDByUniqueName: MISMATCH `get_metadata_guid_by_unique_name`
-    - PATH
-      SDK: /{}/metadata-elements/guid-by-unique-name
-      API: /metadata-expert/metadata-elements/guid-by-unique-name
-    - BODY sends FilterRequestBody != UniqueNameRequestBody
-- getMetadataElementHistory: MISMATCH `get_metadata_element_history`
-    - BODY sends GetRequestBody != HistoryRequestBody
-- getClassificationHistory: MISMATCH `get_classification_history`
-    - PATH
-      SDK: /{}/metadata-elements/{}/classifications/{}/history
-      API: /metadata-expert/metadata-elements/{}/classifications/{}/history
-- findMetadataElementsWithString: MISMATCH `find_metadata_elements_with_string`
-    - PATH
-      SDK: /{}/metadata-elements/by-search-string
-      API: /metadata-expert/metadata-elements/by-search-string
-- findElementsForAnchor: MISMATCH `find_elements_for_anchor`
-    - PATH
-      SDK: /{}/metadata-elements/by-search-string/for-anchor/{}
-      API: /metadata-expert/metadata-elements/by-search-string/for-anchor/{}
-- findElementsInAnchorDomain: MISMATCH `find_elements_in_anchor_domain`
-    - PATH
-      SDK: /{}/metadata-elements/by-search-string/in-anchor-domain/{}
-      API: /metadata-expert/metadata-elements/by-search-string/in-anchor-domain/{}
-- findElementsInAnchorScope: MISMATCH `find_elements_in_anchor_scope`
-    - PATH
-      SDK: /{}/metadata-elements/by-search-string/in-anchor-scope/{}
-      API: /metadata-expert/metadata-elements/by-search-string/in-anchor-scope/{}
 - getAllRelatedMetadataElements: MISSING  (`POST /metadata-expert/related-elements/{}/any-type`)
-- getRelatedMetadataElements: MISMATCH `get_related_metadata_elements`
-    - PATH
-      SDK: /{}/related-elements/{}/type/{}
-      API: /metadata-expert/related-elements/{}/type/{}
-- getAllMetadataElementRelationships: MISMATCH `get_all_metadata_element_relationships`
-    - PATH
-      SDK: /{}/metadata-elements/{}/linked-by-any-type/to-elements/{}
-      API: /metadata-expert/metadata-elements/{}/linked-by-any-type/to-elements/{}
-- getMetadataElementRelationships: MISMATCH `get_metadata_element_relationships`
-    - PATH
-      SDK: /{}/metadata-elements/{}/linked-by-type/{}/to-elements/{}
-      API: /metadata-expert/metadata-elements/{}/linked-by-type/{}/to-elements/{}
-- findMetadataElements: MISMATCH `find_metadata_elements`
-    - PATH
-      SDK: /{}/metadata-elements/by-search-conditions
-      API: /metadata-expert/metadata-elements/by-search-conditions
-- countMetadataElements: MISMATCH `count_metadata_elements`
-    - PATH
-      SDK: /{}/metadata-elements/by-search-conditions/count
-      API: /metadata-expert/metadata-elements/by-search-conditions/count
 - findRelationshipsBetweenMetadataElements: MISSING  (`POST /metadata-expert/relationships/by-search-conditions`)
 - countRelationshipsBetweenMetadataElements: MISSING  (`POST /metadata-expert/relationships/by-search-conditions/count`)
-- getRelationshipByGUID: MISMATCH `get_relationship_by_guid`
-    - PATH
-      SDK: /{}/relationships/by-guid/{}
-      API: /metadata-expert/relationships/by-guid/{}
-- getRelationshipHistory: MISMATCH `get_relationship_history`
-    - PATH
-      SDK: /{}/relationships/{}/history
-      API: /metadata-expert/relationships/{}/history
 
 ### Service: my-profile
 
-- getMyProfile: MISMATCH `get_my_profile`
-    - VERB POST != GET
 - Get My Profile: MISSING  (`POST /my-profile`)
 - Add My Profile: MISSING  (`POST /my-profile/new`)
 
@@ -556,8 +431,6 @@ _Review only - cross-service overlap is often intentional._
 - createClassifiedProject: MISSING  (`POST /project-manager/projects`)
 - createCampaign: MISSING  (`POST /project-manager/projects`)
 - createTaskForProject: MISSING  (`POST /project-manager/projects/{}/task`)
-- clearProjectClassification: MISMATCH `clear_project_classification`
-    - BODY sends NewClassificationRequestBody != DeleteClassificationRequestBody
 - setupProjectDependency: MISSING  (`POST /project-manager/projects/{}/project-dependencies/{}/attach`)
 - setupProjectHierarchy: MISSING  (`POST /project-manager/projects/{}/project-hierarchies/{}/attach`)
 
@@ -597,8 +470,6 @@ _Review only - cross-service overlap is often intentional._
 
 ### Service: schema-maker
 
-- deleteSchemaType: MISMATCH `delete_schema_type`
-    - BODY sends DeleteElementRequestBody != MetadataSourceRequestBody
 - updateSchemaAttribute: MISMATCH `update_schema_attribute`
     - PATH
       SDK: /schema-maker/schema-attributes/{}/update
@@ -607,7 +478,6 @@ _Review only - cross-service overlap is often intentional._
     - PATH
       SDK: /schema-maker/schema-attributes/{}/delete
       API: /schema-maker/schema-attributes/delete
-    - BODY sends DeleteElementRequestBody != MetadataSourceRequestBody
 - getSchemaAttributeByGUID: MISMATCH `get_schema_attribute_by_guid`
     - PATH
       SDK: /schema-maker/schema-attributes/{}/retrieve
@@ -620,10 +490,6 @@ _Review only - cross-service overlap is often intentional._
 
 ### Service: solution-architect
 
-- getDesignPatternsByName: MISMATCH `get_design_patterns_by_name`
-    - PATH
-      SDK: /solution-architect/design-patterns/by-name/{}
-      API: /solution-architect/design-patterns/by-name
 - createInformationSupplyChain: MISSING  (`POST /solution-architect/information-supply-chains`)
 - createInformationSupplyChainFromTemplate: MISSING  (`POST /solution-architect/information-supply-chains/from-template`)
 - updateInformationSupplyChain: MISSING  (`POST /solution-architect/information-supply-chains/{}/update`)
@@ -644,10 +510,6 @@ _Review only - cross-service overlap is often intentional._
 - detachSolutionComponentActor: MISSING  (`POST /solution-architect/solution-roles/{}/solution-component-actors/{}/detach`)
 - findAllSolutionRoles - with full request body: MISSING  (`POST /solution-architect/solution-roles/by-search-string`)
 - findSolutionRoles - with full request body: MISSING  (`POST /solution-architect/solution-roles/by-search-string`)
-- getSolutionRolesByName: MISMATCH `get_solution_roles_by_name`
-    - PATH
-      SDK: /solution-architect/solution-roles/by-name{}
-      API: /solution-architect/solution-roles/by-name
 - getSolutionRolesByName - with full request body: MISSING  (`POST /solution-architect/solution-roles/by-name`)
 - getSolutionRoleByGUID - with request body: MISSING  (`POST /solution-architect/solution-roles/{}/retrieve`)
 - detachSubcomponent: MISSING  (`POST /solution-architect/solution-components/{}/subcomponents/{}/detach`)
@@ -658,21 +520,11 @@ _Review only - cross-service overlap is often intentional._
       API: /solution-architect/solution-components/wires/{}/detach
 - findAllSolutionComponents - with full request body: MISSING  (`POST /solution-architect/solution-components/by-search-string`)
 - findSolutionComponents - with full request body: MISSING  (`POST /solution-architect/solution-components/by-search-string`)
-- getSolutionComponentsByName: MISMATCH `get_solution_components_by_name`
-    - PATH
-      SDK: /solution-architect/solution-components/by-name{}
-      API: /solution-architect/solution-components/by-name
 - getSolutionComponentsByName - with full request body: MISSING  (`POST /solution-architect/solution-components/by-name`)
 - getSolutionComponentByGUID - with request body: MISSING  (`POST /solution-architect/solution-components/{}/retrieve`)
-- getSolutionComponentImplementations: MISMATCH `get_solution_component_implementations`
-    - PATH
-      SDK: /solution-architect/solution-components/{}/implementations{}
-      API: /solution-architect/solution-components/{}/implementations
 
 ### Service: subject-area
 
-- createSubjectAreaFromTemplate: MISMATCH `create_subject_area_from_template`
-    - BODY sends NewElementRequestBody != TemplateRequestBody
 - linkSubjectAreas: MISSING  (`POST /subject-area/collections/{}/collection-hierarchies/{}/attach`)
 - detachSubjectAreas: MISSING  (`POST /subject-area/collections/{}/collection-hierarchies/{}/detach`)
 - findAllSubjectAreas: MISSING  (`POST /subject-area/collectionss/by-search-string`)
@@ -686,8 +538,6 @@ _Review only - cross-service overlap is often intentional._
 
 ### Service: time-keeper
 
-- createContextEventFromTemplate: MISMATCH `create_context_event_from_template`
-    - BODY sends NewElementRequestBody != TemplateRequestBody
 
 ### Service: valid-metadata
 
@@ -701,5 +551,3 @@ _Review only - cross-service overlap is often intentional._
 - getAttributeTypes: MISSING  (`GET /valid-metadata/open-metadata-types/attribute-defs`)
 - getTypeDefByName: MISSING  (`GET /valid-metadata/open-metadata-types/name/{}`)
 - setUpSpecificationProperty: MISSING  (`POST /valid-metadata/elements/{}/specification-properties`)
-- linkSpecificationProperty: MISMATCH `link_specification_property`
-    - BODY sends NewElementRequestBody != NewRelationshipRequestBody
diff --git a/pyegeria/core/_server_client.py b/pyegeria/core/_server_client.py
index 8501e96f..e54af3e4 100644
--- a/pyegeria/core/_server_client.py
+++ b/pyegeria/core/_server_client.py
@@ -6522,17 +6522,30 @@ async def _async_get_guid_request(self, url: str, _type: str, _gen_output: Calla
                                       skip_relationships: list[str] | None = None,
                                       graph_query_depth: int = 3,
                                       output_format: str = 'JSON', report_spec: Optional[str | dict] = None,
-                                      body: Optional[dict | GetRequestBody] = None, max_mermaid_node_count=10,
+                                      body: Optional[dict | GetRequestBody | ResultsRequestBody] = None,
+                                      max_mermaid_node_count=10,
+                                      body_model: type[GetRequestBody | ResultsRequestBody] = GetRequestBody,
                                       **kwargs) -> Any:
+        """Retrieve an element by GUID.
 
-        if isinstance(body, GetRequestBody):
+        `body_model` selects the request-body class to send. It defaults to
+        GetRequestBody, which is what nearly every endpoint reached through
+        this helper documents. A few endpoints document ResultsRequestBody
+        instead (e.g. governance-officer's .../graph); they pass it explicitly
+        rather than switching to _async_get_results_body_request, because only
+        this helper understands the singular "elementGraph" response key.
+        """
+        if isinstance(body, (GetRequestBody, ResultsRequestBody)):
             validated_body = body
         elif isinstance(body, dict):
-            validated_body = self._validate_body(self._get_request_adapter.validate_python, body)
+            adapter = (self._get_request_adapter.validate_python
+                       if body_model is GetRequestBody
+                       else self._results_request_adapter.validate_python)
+            validated_body = self._validate_body(adapter, body)
         else:
             _type = _type.replace(" ", "")
             body = {
-                "class": "GetRequestBody",
+                "class": body_model.__name__,
                 "metadataElementTypeName": _type,
                 "includeOnlyRelationships": include_only_relationships,
                 "skipRelationships": skip_relationships,
@@ -6540,7 +6553,7 @@ async def _async_get_guid_request(self, url: str, _type: str, _gen_output: Calla
                 "maxMermaidNodeCount": max_mermaid_node_count,
                 **kwargs
             }
-            validated_body = self._validate_body(GetRequestBody.model_validate, body)
+            validated_body = self._validate_body(body_model.model_validate, body)
 
         json_body = validated_body.model_dump_json(indent=2, exclude_none=True)
 
diff --git a/pyegeria/omvs/actor_manager.py b/pyegeria/omvs/actor_manager.py
index 2212ac9b..7d3ee49a 100644
--- a/pyegeria/omvs/actor_manager.py
+++ b/pyegeria/omvs/actor_manager.py
@@ -251,7 +251,7 @@ async def _async_create_actor_profile_from_template(self, body: Optional[dict |
 
         # Handle Optional body parameter
         body_to_use = body if body is not None else {}
-        return await self._async_create_element_from_template("POST", url, body_to_use)
+        return await self._async_create_element_from_template(url, body_to_use)
 
     @dynamic_catch
     def create_actor_profile_from_template(self, body: Optional[dict | TemplateRequestBody] = None) -> str:
@@ -580,7 +580,7 @@ async def _async_detach_asset_from_profile(self, asset_guid: str, it_profile_gui
         """
         url = (f"{self.command_root}/assets/{asset_guid}/it-profiles/{it_profile_guid}/detach")
 
-        await self._async_delete_element_request(url, body)
+        await self._async_delete_relationship_request(url, body)
         logger.debug(f"Detached asset {asset_guid} from it profile {it_profile_guid}")
 
     def detach_asset_from_profile(self, asset_guid: str, it_profile_guid: str,
@@ -1430,7 +1430,7 @@ async def _async_create_actor_role_from_template(self, body: Optional[dict | Tem
 
         # Handle Optional body parameter
         body_to_use = body if body is not None else {}
-        return await self._async_create_element_from_template("POST", url, body_to_use)
+        return await self._async_create_element_from_template(url, body_to_use)
 
     @dynamic_catch
     def create_actor_role_from_template(self, body: Optional[dict | TemplateRequestBody] = None) -> str:
@@ -1754,7 +1754,7 @@ async def _async_detach_person_role_from_profile(self, person_role_guid: str, pe
         url = (
             f"{self.command_root}/actor-roles/{person_role_guid}/person-role-appointments/{person_profile_guid}/detach")
 
-        await self._async_delete_element_request(url, body)
+        await self._async_delete_relationship_request(url, body)
         logger.debug(f"Detached Person Rolet {person_role_guid} from Person Profile {person_profile_guid}")
 
     def detach_person_role_from_profile(self, person_role_guid: str, person_profile_guid: str,
@@ -2188,7 +2188,7 @@ def detach_it_profile_role_from_it_profile(self, it_profile_role_guid: str, it_p
 
     @dynamic_catch
     async def _async_delete_actor_role(self, actor_role_guid: str,
-                                       body: Optional[dict | DeleteElementRequestBody] = None,
+                                       body: Optional[dict | DeleteRelationshipRequestBody] = None,
                                        cascade: bool = False) -> None:
         """ Delete an actor role. Async Version.
 
@@ -2231,11 +2231,11 @@ async def _async_delete_actor_role(self, actor_role_guid: str,
         """
         url = f"{self.command_root}/actor-roles/{actor_role_guid}/delete"
 
-        await self._async_delete_element_request(url, body, cascade)
+        await self._async_delete_relationship_request(url, body, cascade)
         logger.debug(f"Deleted actor role {actor_role_guid} with cascade {cascade}")
 
     @dynamic_catch
-    def delete_actor_role(self, actor_role_guid: str, body: Optional[dict | DeleteElementRequestBody] = None,
+    def delete_actor_role(self, actor_role_guid: str, body: Optional[dict | DeleteRelationshipRequestBody] = None,
                           cascade: bool = False) -> None:
         """ Delete an actor role. Async Version.
 
@@ -3002,7 +3002,7 @@ async def _async_create_user_identity_from_template(self, body: Optional[dict |
         """
         url = f"{self.command_root}/user-identities/from-template"
 
-        return await self._async_create_element_from_template("POST", url, body)
+        return await self._async_create_element_from_template(url, body)
 
     @dynamic_catch
     def create_user_identity_from_template(self, body: Optional[dict | TemplateRequestBody] = None) -> str:
@@ -3613,7 +3613,7 @@ async def _async_add_security_group_membership(self, user_identity_guid: str, se
 
         """
 
-        url = url = (f"{self.command_root}/user-identities/{user_identity_guid}/security-group-membership/classify")
+        url = (f"{self.command_root}/user-identities/{user_identity_guid}/security-group-memberships/classify")
         await self._async_new_classification_request(url, ["SecurityGroupMembershipProperties"], body)
         logger.debug(f"Classifying User Identity {user_identity_guid} with Security Groups  {security_groups}")
 
@@ -3712,7 +3712,7 @@ async def _async_update_security_group_membership(self, user_identity_guid: str,
           "forDuplicateProcessing" : false
         }
         """
-        url = (f"{self.command_root}/user-identities/{user_identity_guid}/security-group-membership/reclassify")
+        url = (f"{self.command_root}/user-identities/{user_identity_guid}/security-group-memberships/reclassify")
 
         await self._async_make_request("POST", url, body)
         logger.debug(f"Updated security classifications for {user_identity_guid}")
@@ -5544,7 +5544,7 @@ async def _async_create_contact_details_from_template(self, body: Optional[dict
         }
         """
         url = f"{self.command_root}/contact-details/from-template"
-        return await self._async_create_element_body_request(url, ["ContactDetailsProperties"], body)
+        return await self._async_create_element_from_template(url, body)
 
     @dynamic_catch
     def create_contact_details_from_template(self, body: Optional[dict | TemplateRequestBody] = None) -> str:
@@ -6582,7 +6582,7 @@ async def _async_create_perspective_from_template(self, body: Optional[dict | Te
         """
         url = f"{self.command_root}/perspectives/from-template"
         body_to_use = body if body is not None else {}
-        return await self._async_create_element_body_request(url, ["PerspectiveProperties"], body_to_use)
+        return await self._async_create_element_from_template(url, body_to_use)
 
     @dynamic_catch
     def create_perspective_from_template(self, body: Optional[dict | TemplateRequestBody] = None) -> str:
@@ -7388,7 +7388,7 @@ async def _async_create_skill_from_template(self, body: Optional[dict | Template
         """
         url = f"{self.command_root}/skills/from-template"
         body_to_use = body if body is not None else {}
-        return await self._async_create_element_body_request(url, ["SkillProperties"], body_to_use)
+        return await self._async_create_element_from_template(url, body_to_use)
 
     @dynamic_catch
     def create_skill_from_template(self, body: Optional[dict | TemplateRequestBody] = None) -> str:
diff --git a/pyegeria/omvs/classification_explorer.py b/pyegeria/omvs/classification_explorer.py
index a6015f11..ebc37fda 100644
--- a/pyegeria/omvs/classification_explorer.py
+++ b/pyegeria/omvs/classification_explorer.py
@@ -961,7 +961,7 @@ async def _async_get_semantic_assignees(
 
         """
 
-        url = (f"{self.classification_command_root}/glossaries/elements/by-semantic-assignment/{term_guid}")
+        url = (f"{self.classification_command_root}/elements/by-semantic-assignment/{term_guid}")
 
         response = await self._async_make_request("POST", url, body_slimmer(body), timeout=default_timeout, **kwargs)
         elements = response.json().get("elements", None)
@@ -1362,7 +1362,7 @@ async def _async_get_source_elements(
 
         """
 
-        url = (f"{self.classification_command_root}/glossaries/elements/{element_guid}/source")
+        url = (f"{self.classification_command_root}/elements/{element_guid}/source")
 
         response = await self._async_get_results_body_request(url, "Referenceable", self._generate_referenceable_output,
                                                               start_from=start_from, page_size=page_size,
@@ -1496,7 +1496,7 @@ async def _async_get_elements_sourced_from(
 
         """
 
-        url = (f"{self.classification_command_root}/glossaries/elements/{element_guid}/sourced-from")
+        url = (f"{self.classification_command_root}/elements/{element_guid}/sourced-from")
 
         response = await self._async_get_results_body_request(url, "Referenceable", self._generate_referenceable_output,
                                                               start_from=start_from, page_size=page_size,
@@ -1888,7 +1888,7 @@ async def _async_get_licensed_elements(
 
         """
 
-        url = (f"{self.classification_command_root}/glossaries/elements/licenses/{license_type_guid}")
+        url = (f"{self.classification_command_root}/elements/licenses/{license_type_guid}")
 
         response = await self._async_get_results_body_request(url, "Referenceable", self._generate_referenceable_output,
                                                               start_from=start_from, page_size=page_size,
@@ -2017,7 +2017,7 @@ async def _async_get_licenses(
 
         """
 
-        url = (f"{self.classification_command_root}/glossaries/elements/{element_guid}/licenses")
+        url = (f"{self.classification_command_root}/elements/{element_guid}/licenses")
 
         response = await self._async_get_results_body_request(url, "Referenceable", self._generate_referenceable_output,
                                                               start_from=start_from, page_size=page_size,
@@ -2146,7 +2146,7 @@ async def _async_get_certified_elements(
 
         """
 
-        url = (f"{self.classification_command_root}/glossaries/elements/certifications/{certification_type_guid}")
+        url = (f"{self.classification_command_root}/elements/certifications/{certification_type_guid}")
 
         response = await self._async_get_results_body_request(url, "Referenceable", self._generate_referenceable_output,
                                                               start_from=start_from, page_size=page_size,
@@ -11108,7 +11108,7 @@ async def _async_clear_known_duplicate_classification(
                 "effectiveTime": effective_time
             }
 
-        await self._async_delete_relationship_request(url, body)
+        await self._async_delete_classification_request(url, body)
 
     def clear_known_duplicate_classification(
             self,
@@ -11591,7 +11591,7 @@ async def _async_clear_consolidated_duplicate_classification(
                 "effectiveTime": effective_time
             }
 
-        await self._async_delete_relationship_request(url, body)
+        await self._async_delete_classification_request(url, body)
 
     def clear_consolidated_duplicate_classification(
             self,
diff --git a/pyegeria/omvs/data_designer.py b/pyegeria/omvs/data_designer.py
index a30e9a83..b5bc05f0 100644
--- a/pyegeria/omvs/data_designer.py
+++ b/pyegeria/omvs/data_designer.py
@@ -267,7 +267,7 @@ async def _async_detach_specialized_data_value_specification(
         """
         url = (
             f"{self.ref_data_designer_command_base}/data-value-specifications/{spec_guid}"
-            f"/specialized-data-value-specification-definition/{grain_guid}/detach"
+            f"/specialized-data-value-specifications/{grain_guid}/detach"
         )
         await self._async_delete_relationship_request(url, body, cascade_delete)
 
diff --git a/pyegeria/omvs/data_discovery.py b/pyegeria/omvs/data_discovery.py
index 9ec8cf4d..186024f6 100644
--- a/pyegeria/omvs/data_discovery.py
+++ b/pyegeria/omvs/data_discovery.py
@@ -216,7 +216,7 @@ async def _async_create_annotation_from_template(self, body: dict | TemplateRequ
         ```
         """
         url = f"{self.platform_url}/servers/{self.view_server}/api/open-metadata/data-discovery/annotations/from-template"
-        return await self._async_create_element_body_request(url, "AnnotationProperties", body)
+        return await self._async_create_element_from_template(url, body)
 
     def create_annotation_from_template(self, body: dict | TemplateRequestBody) -> str:
         """Create an annotation from a template.
diff --git a/pyegeria/omvs/glossary_manager.py b/pyegeria/omvs/glossary_manager.py
index 26565865..38afa6d6 100644
--- a/pyegeria/omvs/glossary_manager.py
+++ b/pyegeria/omvs/glossary_manager.py
@@ -1834,7 +1834,7 @@ def add_is_abstract_concept(
 
     @dynamic_catch
     async def _async_remove_is_abstract_concept(
-            self, term_guid: str, body: Optional[dict | DeleteClassificationRequestBody] = None,
+            self, term_guid: str, body: Optional[dict | DeleteElementRequestBody] = None,
             ) -> None:
         """Remove the abstract concept designation from the glossary term. Async Version.
 
@@ -1876,12 +1876,12 @@ async def _async_remove_is_abstract_concept(
             f"{self.platform_url}/servers/{self.view_server}/api/open-metadata/glossary-manager/glossaries/"
             f"terms/{term_guid}/is-abstract-concept/delete"
         )
-        await self._async_delete_classification_request(url, body)
+        await self._async_delete_element_request(url, body)
         logger.info(f"Removed AbstractConcept classification to {term_guid}")
 
     @dynamic_catch
     def remove_is_abstract_concept(
-            self, term_guid: str, body: Optional[dict | DeleteClassificationRequestBody] = None,
+            self, term_guid: str, body: Optional[dict | DeleteElementRequestBody] = None,
             ) -> None:
         """Remove the abstract concept designation from the glossary term.
 
@@ -2026,7 +2026,7 @@ def add_is_context_definition(
 
     @dynamic_catch
     async def _async_remove_is_context_definition(
-            self, term_guid: str, body: Optional[dict | DeleteClassificationRequestBody] = None,
+            self, term_guid: str, body: Optional[dict | DeleteRelationshipRequestBody] = None,
             ) -> None:
         """Remove the context definition designation from the glossary term. Async Version.
 
@@ -2067,12 +2067,12 @@ async def _async_remove_is_context_definition(
             f"{self.platform_url}/servers/{self.view_server}/api/open-metadata/glossary-manager/glossaries/"
             f"terms/{term_guid}/is-context-definition/delete"
         )
-        await self._async_delete_classification_request(url, body)
+        await self._async_delete_relationship_request(url, body)
         logger.info(f"Removed ContextDefinition classification to {term_guid}")
 
     @dynamic_catch
     def remove_is_context_definition(
-            self, term_guid: str, body: Optional[dict | DeleteClassificationRequestBody] = None,
+            self, term_guid: str, body: Optional[dict | DeleteRelationshipRequestBody] = None,
             ) -> None:
         """Remove the context definition designation from the glossary term.
 
@@ -2407,7 +2407,7 @@ def add_activity_description(
 
     @dynamic_catch
     async def _async_remove_activity_description(
-            self, term_guid: str, body: Optional[dict | DeleteClassificationRequestBody] = None,
+            self, term_guid: str, body: Optional[dict | DeleteRelationshipRequestBody] = None,
             ) -> None:
         """Remove the activity designation from the glossary term. Async Version.
 
@@ -2449,12 +2449,12 @@ async def _async_remove_activity_description(
             f"{self.platform_url}/servers/{self.view_server}/api/open-metadata/glossary-manager/glossaries/"
             f"terms/{term_guid}/is-activity/remove"
         )
-        await self._async_delete_classification_request(url, body)
+        await self._async_delete_relationship_request(url, body)
         logger.info(f"Removed ActivityDescription classification to {term_guid}")
 
     @dynamic_catch
     def remove_activity_description(
-            self, term_guid: str, body: Optional[dict | DeleteClassificationRequestBody] = None,
+            self, term_guid: str, body: Optional[dict | DeleteRelationshipRequestBody] = None,
             ) -> None:
         """Remove the activity designation from the glossary term.
 
diff --git a/pyegeria/omvs/governance_officer.py b/pyegeria/omvs/governance_officer.py
index fd785d8e..b619b1ee 100644
--- a/pyegeria/omvs/governance_officer.py
+++ b/pyegeria/omvs/governance_officer.py
@@ -30,7 +30,7 @@
                              ReferenceableProperties, TemplateRequestBody,
                              UpdateElementRequestBody, NewRelationshipRequestBody,
                              DeleteElementRequestBody, DeleteRelationshipRequestBody,
-                             UpdateRelationshipRequestBody)
+                             UpdateRelationshipRequestBody, ResultsRequestBody)
 from pyegeria.core.utils import dynamic_catch
 
 GOV_DEF_PROPERTIES_LIST = ["GovernanceDefinitionProperties", "GovernanceStrategyProperties", "RegulationProperties",
@@ -2739,10 +2739,14 @@ async def _async_get_governance_action_process_graph(self, guid: str, element_ty
             f"{self.url_marker}/governance-action-processes/{guid}/graph")
         type = element_type if element_type else "GovernanceDefinition"
 
+        # This endpoint documents ResultsRequestBody, not the GetRequestBody
+        # this helper sends by default (Egeria-api-governance-officer.http).
+        # Kept on _async_get_guid_request because only it reads the singular
+        # "elementGraph" response key that the graph endpoint returns.
         response = await self._async_get_guid_request(url, _type=type,
                                                       _gen_output=self._generate_governance_definition_output,
                                                       output_format=output_format, report_spec=report_spec,
-                                                      body=body, **kwargs)
+                                                      body=body, body_model=ResultsRequestBody, **kwargs)
 
         return response
 
diff --git a/pyegeria/omvs/lineage_linker.py b/pyegeria/omvs/lineage_linker.py
index db8025e7..a8d24586 100644
--- a/pyegeria/omvs/lineage_linker.py
+++ b/pyegeria/omvs/lineage_linker.py
@@ -159,9 +159,8 @@ async def _async_link_lineage(
         }
         ```
         """
-        url = f"{self.platform_url}/servers/{self.view_server}/api/open-metadata/lineage-linker/elements/{element_one_guid}/{relationship_type_name}/{element_two_guid}/attach"
-        response = await self._async_make_request("POST", url, body)
-        return response.json().get("guid")
+        url = f"{self.platform_url}/servers/{self.view_server}/api/open-metadata/lineage-linker/from-elements/{element_one_guid}/via/{relationship_type_name}/to-elements/{element_two_guid}/attach"
+        return await self._async_new_relationship_request(url, ["LineageRelationshipProperties"], body)
 
     def link_lineage(
         self,
diff --git a/pyegeria/omvs/location_arena.py b/pyegeria/omvs/location_arena.py
index 36788423..54f9420f 100644
--- a/pyegeria/omvs/location_arena.py
+++ b/pyegeria/omvs/location_arena.py
@@ -201,7 +201,7 @@ async def _async_create_location_from_template(self, body: Optional[dict | Templ
         """
         url = f"{self.ref_location_command_base}/locations/from-template"
 
-        return await self._async_create_element_from_template("POST", url, body)
+        return await self._async_create_element_from_template(url, body)
 
     @dynamic_catch
     def create_location_from_template(self, body: Optional[dict | TemplateRequestBody] = None) -> str:
diff --git a/pyegeria/omvs/metadata_expert.py b/pyegeria/omvs/metadata_expert.py
index 4a3fe662..53cb5197 100644
--- a/pyegeria/omvs/metadata_expert.py
+++ b/pyegeria/omvs/metadata_expert.py
@@ -891,7 +891,7 @@ async def _async_get_metadata_guid_by_unique_name(
         name: Optional[str] = None,
         property_name: str = "qualifiedName",
         as_of_time: Optional[str] = None,
-        body: Optional[dict | FilterRequestBody] = None,
+        body: Optional[dict] = None,  # sends "class": "UniqueNameRequestBody" (no pyegeria.models class backs this yet)
         **kwargs
     ) -> str:
         """
@@ -964,7 +964,7 @@ def get_metadata_guid_by_unique_name(
         name: Optional[str] = None,
         property_name: str = "qualifiedName",
         as_of_time: Optional[str] = None,
-        body: Optional[dict | FilterRequestBody] = None,
+        body: Optional[dict] = None,  # sends "class": "UniqueNameRequestBody" (no pyegeria.models class backs this yet)
         **kwargs
     ) -> str:
         """
@@ -1555,7 +1555,18 @@ async def _async_get_metadata_element_history(
         body: Optional[dict] = None,
         **kwargs,
     ) -> list | str:
-        """Retrieve the history of a metadata element. Async version."""
+        """Retrieve the history of a metadata element. Async version.
+
+        Notes
+        -----
+        Sends a raw "HistoryRequestBody" dict via _async_make_request rather
+        than through _async_get_guid_request: that helper validates against
+        GetRequestBody, whose "class" field is a Literal["GetRequestBody"] --
+        passing "HistoryRequestBody" through it raised a pydantic
+        ValidationError on every call (no HistoryRequestBody model exists in
+        pyegeria.models yet). Mirrors _async_get_classification_history, the
+        sibling endpoint in this file that already does this correctly.
+        """
         if body is None:
             body = {
                 "class": "HistoryRequestBody",
@@ -1563,10 +1574,18 @@ async def _async_get_metadata_element_history(
                 "oldestFirst": oldest_first,
             }
         url = f"{self.command_root}/metadata-elements/{metadata_element_guid}/history"
-        return await self._async_get_guid_request(
-            url, _type="MetadataElement", _gen_output=self._generate_referenceable_output, body=body, **kwargs
+
+        response: Response = await self._async_make_request(
+            "POST", url, body_slimmer(body),
         )
 
+        elements = response.json().get("elements", NO_ELEMENTS_FOUND)
+        if type(elements) is str:
+            logger.info(NO_ELEMENTS_FOUND)
+            return NO_ELEMENTS_FOUND
+
+        return elements
+
     @dynamic_catch
     def get_metadata_element_history(
         self,
diff --git a/pyegeria/omvs/my_profile.py b/pyegeria/omvs/my_profile.py
index e9982991..10d53b03 100644
--- a/pyegeria/omvs/my_profile.py
+++ b/pyegeria/omvs/my_profile.py
@@ -376,14 +376,12 @@ async def _async_get_my_profile(
             Egeria errors.
         """
         url = self.my_profile_command_root
-        # response = await self._async_get_request_body_request(url=url, _type="Actor",
-        #                                                       _gen_output=self._generate_my_profile_output,
-        #                                                       output_format=output_format, report_spec=report_spec,
-        #                                                       body=body,**kwargs)
-        if body is None:
-            response = await self._async_make_request("POST", url)
-        else:
-            response = await self._async_make_request("POST", url, body_slimmer(body))
+        # Egeria-api-my-profile.http documents this endpoint as a plain GET
+        # with no request body -- it derives the profile from the bearer
+        # token, not from filter criteria. The `body`/GetRequestBody
+        # parameter is accepted for signature consistency with sibling
+        # methods but intentionally unused here.
+        response = await self._async_make_request("GET", url)
         elements = response.json().get("element", NO_ELEMENTS_FOUND)
         if isinstance(elements, dict):
             self.my_profile_guid = elements.get("elementHeader", {}).get("guid")
diff --git a/pyegeria/omvs/project_manager.py b/pyegeria/omvs/project_manager.py
index 820036ad..86b75bf9 100644
--- a/pyegeria/omvs/project_manager.py
+++ b/pyegeria/omvs/project_manager.py
@@ -459,8 +459,7 @@ async def _async_clear_project_classification(
             f"{self.platform_url}/servers/{self.view_server}/api/open-metadata/project-manager/"
             f"projects/{project_guid}/classification-properties/declassify"
         )
-        response = await self._async_new_classification_request(url, ["ProjectClassificationProperties"],
-                                                                body=body)
+        response = await self._async_delete_classification_request(url, body=body)
         return response
 
     @dynamic_catch
diff --git a/pyegeria/omvs/schema_maker.py b/pyegeria/omvs/schema_maker.py
index 344fe9d0..85d97f7e 100644
--- a/pyegeria/omvs/schema_maker.py
+++ b/pyegeria/omvs/schema_maker.py
@@ -20,6 +20,7 @@
     SearchStringRequestBody,
     GetRequestBody,
     ReferenceableProperties,
+    MetadataSourceRequestBody,
 )
 from pyegeria.view.output_formatter import (
     populate_common_columns,
@@ -130,12 +131,12 @@ def update_schema_type(self, schema_type_guid: str, body: dict | UpdateElementRe
 
     @dynamic_catch
     async def _async_delete_schema_type(
-        self, schema_type_guid: str, body: dict | DeleteElementRequestBody
+        self, schema_type_guid: str, body: dict | MetadataSourceRequestBody
     ) -> None:
         url = f"{self.platform_url}/servers/{self.view_server}/api/open-metadata/schema-maker/schema-types/{schema_type_guid}/delete"
-        await self._async_delete_element_body_request(url, body)
+        await self._async_metadata_source_body_request(url, body)
 
-    def delete_schema_type(self, schema_type_guid: str, body: dict | DeleteElementRequestBody) -> None:
+    def delete_schema_type(self, schema_type_guid: str, body: dict | MetadataSourceRequestBody) -> None:
         loop = asyncio.get_event_loop()
         loop.run_until_complete(self._async_delete_schema_type(schema_type_guid, body))
 
@@ -165,13 +166,13 @@ def update_schema_attribute(
 
     @dynamic_catch
     async def _async_delete_schema_attribute(
-        self, schema_attribute_guid: str, body: dict | DeleteElementRequestBody
+        self, schema_attribute_guid: str, body: dict | MetadataSourceRequestBody
     ) -> None:
         url = f"{self.platform_url}/servers/{self.view_server}/api/open-metadata/schema-maker/schema-attributes/{schema_attribute_guid}/delete"
-        await self._async_delete_element_body_request(url, body)
+        await self._async_metadata_source_body_request(url, body)
 
     def delete_schema_attribute(
-        self, schema_attribute_guid: str, body: dict | DeleteElementRequestBody
+        self, schema_attribute_guid: str, body: dict | MetadataSourceRequestBody
     ) -> None:
         loop = asyncio.get_event_loop()
         loop.run_until_complete(self._async_delete_schema_attribute(schema_attribute_guid, body))
diff --git a/pyegeria/omvs/solution_architect.py b/pyegeria/omvs/solution_architect.py
index dcba4066..bba65a5c 100644
--- a/pyegeria/omvs/solution_architect.py
+++ b/pyegeria/omvs/solution_architect.py
@@ -271,7 +271,7 @@ async def _async_get_design_patterns_by_name(self, name: Optional[str] = None, b
                                          graph_query_depth: int = 3, output_format: str = "JSON", report_spec: str | dict = "Design-Pattern-DrE", **kwargs):
         if name is None and "filter_string" in kwargs:
             name = kwargs.pop("filter_string")
-        url = f"{self.solution_architect_command_root}/design-patterns/by-name/{name}"
+        url = f"{self.solution_architect_command_root}/design-patterns/by-name"
         params = {
             'graph_query_depth': graph_query_depth,
             'filter_string': name,
diff --git a/pyegeria/omvs/subject_area.py b/pyegeria/omvs/subject_area.py
index 09578e78..b8fd6fe0 100644
--- a/pyegeria/omvs/subject_area.py
+++ b/pyegeria/omvs/subject_area.py
@@ -219,7 +219,7 @@ async def _async_create_subject_area_from_template(self, body: dict | TemplateRe
         ```
         """
         url = f"{self.platform_url}/servers/{self.view_server}/api/open-metadata/subject-area/collections/from-template"
-        return await self._async_create_element_body_request(url, "SubjectAreaProperties", body)
+        return await self._async_create_element_from_template(url, body)
 
     def create_subject_area_from_template(self, body: dict | TemplateRequestBody) -> str:
         """Create a subject area from a template.
@@ -370,7 +370,7 @@ async def _async_delete_subject_area(
         ```
         """
         url = f"{self.platform_url}/servers/{self.view_server}/api/open-metadata/subject-area/collections/{subject_area_guid}/delete"
-        await self._async_delete_element_body_request(url, body)
+        await self._async_delete_element_request(url, body)
 
     def delete_subject_area(self, subject_area_guid: str, body: dict | DeleteElementRequestBody) -> None:
         """Delete a subject area.
diff --git a/pyegeria/omvs/time_keeper.py b/pyegeria/omvs/time_keeper.py
index c9a6f8f2..649da55b 100644
--- a/pyegeria/omvs/time_keeper.py
+++ b/pyegeria/omvs/time_keeper.py
@@ -259,7 +259,7 @@ async def _async_create_context_event_from_template(self, body: dict | TemplateR
         ```
         """
         url = f"{self.platform_url}/servers/{self.view_server}/api/open-metadata/time-keeper/context-events/from-template"
-        return await self._async_create_element_body_request(url, "ContextEventProperties", body)
+        return await self._async_create_element_from_template(url, body)
 
     def create_context_event_from_template(self, body: dict | TemplateRequestBody) -> str:
         """Create a context event from a template.
@@ -411,7 +411,7 @@ async def _async_delete_context_event(
         ```
         """
         url = f"{self.platform_url}/servers/{self.view_server}/api/open-metadata/time-keeper/context-events/{context_event_guid}/delete"
-        await self._async_delete_element_body_request(url, body)
+        await self._async_delete_element_request(url, body)
 
     def delete_context_event(self, context_event_guid: str, body: dict | DeleteElementRequestBody) -> None:
         """Delete a context event.
diff --git a/pyegeria/omvs/valid_metadata.py b/pyegeria/omvs/valid_metadata.py
index a56fd8a9..ebeb6663 100644
--- a/pyegeria/omvs/valid_metadata.py
+++ b/pyegeria/omvs/valid_metadata.py
@@ -2689,7 +2689,7 @@ async def _async_link_specification_property(
         """
         url = (f"{self.platform_url}/servers/{self.view_server}/api/open-metadata/valid-metadata/"
                f"elements/{element_guid}/specification-properties/{vv_def_guid}/attach")
-        await self._async_create_element_body_request(url, ["SpecificationPropertyAssignmentProperties"], body)
+        await self._async_new_relationship_request(url, ["SpecificationPropertyAssignmentProperties"], body)
         logger.info(f"Linked specification property {vv_def_guid} to element {element_guid}")
 
     @dynamic_catch
diff --git a/scripts/omvs_audit.py b/scripts/omvs_audit.py
index 3115a37c..3541877e 100644
--- a/scripts/omvs_audit.py
+++ b/scripts/omvs_audit.py
@@ -99,6 +99,14 @@
 # Transparent wrappers around a URL expression, e.g. str(HttpUrl(f"...")).
 URL_WRAPPERS = {"str", "HttpUrl", "AnyUrl", "quote", "urljoin"}
 
+# Helpers that build a trailing "?key=value&..." query string (or "" when no
+# params are set) - safe to elide entirely for path comparison, since
+# canon_path already splits on "?". Appearing as f"{root}/foo{query_string(...)}"
+# with no resolvable value otherwise renders as an opaque "{expr}" glued
+# straight onto the path, producing false PATH mismatches
+# (solution_architect.py / collection_manager.py's query_string() helper).
+QUERY_STRING_FUNCS = {"query_string"}
+
 # Internal helpers that resolve a name/GUID before the real call. They issue
 # their own request, so they must not be mistaken for the method's own verb.
 LOOKUP_HELPER_RE = re.compile(r"get_guid__|__async_get_guid")
@@ -293,6 +301,8 @@ def _flatten(node: ast.AST, roots: dict[str, str]) -> str:
     if isinstance(node, ast.BinOp) and isinstance(node.op, ast.Add):
         return _flatten(node.left, roots) + _flatten(node.right, roots)
     if isinstance(node, ast.Name):
+        if node.id in roots:
+            return roots[node.id]
         return "{%s}" % node.id
     if isinstance(node, ast.Attribute):
         if isinstance(node.value, ast.Name) and node.value.id == "self":
@@ -301,10 +311,18 @@ def _flatten(node: ast.AST, roots: dict[str, str]) -> str:
             if node.attr in roots:
                 return roots[node.attr]
         return "{%s}" % node.attr
-    # Unwrap URL-normalising wrappers, e.g. str(HttpUrl(f"...")).
     if isinstance(node, ast.Call):
         fname = (node.func.id if isinstance(node.func, ast.Name)
                  else getattr(node.func, "attr", None))
+        # A module-level helper that just returns the service root, e.g.
+        # url = f"{base_path(self, self.view_server)}/metadata-elements/{guid}".
+        # Its args (self, view_server) are irrelevant here - both already
+        # collapse to "" / "{}" - so look it up by name, not by call shape.
+        if fname in roots:
+            return roots[fname]
+        if fname in QUERY_STRING_FUNCS:
+            return ""
+        # Unwrap URL-normalising wrappers, e.g. str(HttpUrl(f"...")).
         if fname in URL_WRAPPERS and node.args:
             return _flatten(node.args[0], roots)
         # e.g. name.lower() - name the receiver so lint can classify it
@@ -350,6 +368,29 @@ def resolve_roots(tree: ast.AST) -> dict[str, str]:
     return roots
 
 
+def resolve_module_root_funcs(tree: ast.Module) -> dict[str, str]:
+    """Resolve module-level helper functions that just return the service root.
+
+    Several modules (metadata_expert, governance_officer, solution_architect)
+    define ``def base_path(client, view_server): return f"{client.platform_url}
+    /servers/{view_server}/api/open-metadata/<service>"`` and call it as
+    ``f"{base_path(self, self.view_server)}/..."``. Its own args are irrelevant
+    - only the literal path segments in its return value matter - so this
+    resolves by function name for lookup in ``_flatten``'s Call handling.
+    """
+    funcs: dict[str, str] = {}
+    for node in tree.body:
+        if not isinstance(node, ast.FunctionDef):
+            continue
+        returns = [n for n in ast.walk(node) if isinstance(n, ast.Return) and n.value is not None]
+        if len(returns) != 1:
+            continue
+        value = _flatten(returns[0].value, {})
+        if "/open-metadata/" in value:
+            funcs[node.name] = value
+    return funcs
+
+
 def parse_py_file(filepath: str, helper_verbs: dict[str, str],
                   helper_bodies: dict[str, str] | None = None) -> dict[str, PyMethod]:
     content = open(filepath, encoding="utf-8").read()
@@ -360,6 +401,7 @@ def parse_py_file(filepath: str, helper_verbs: dict[str, str],
         return {}
 
     roots = resolve_roots(tree)
+    roots.update(resolve_module_root_funcs(tree))
     methods: dict[str, PyMethod] = {}
     sync_names: list[str] = []
 
@@ -384,11 +426,33 @@ def parse_py_file(filepath: str, helper_verbs: dict[str, str],
                 if names:
                     body_class = frozenset(names)
 
+        # Local variables assigned a URL prefix inside the method body, rather
+        # than in __init__ (resolve_roots only sees self.<attr> assignments
+        # there) - covers two shapes seen in the OMVS clients:
+        #   base = f"{self.platform_url}/servers/{...}/api/open-metadata/..."
+        #   possible_query_params = query_string([...])
+        # both later interpolated straight into the url f-string. Scoped to
+        # this function only.
+        fn_roots = dict(roots)
+        for node in ast.walk(fn):
+            if not (isinstance(node, ast.Assign) and len(node.targets) == 1
+                    and isinstance(node.targets[0], ast.Name)):
+                continue
+            target = node.targets[0].id
+            if isinstance(node.value, ast.Call):
+                callee = (node.value.func.id if isinstance(node.value.func, ast.Name) else None)
+                if callee in QUERY_STRING_FUNCS:
+                    fn_roots[target] = ""
+            else:
+                value = _flatten(node.value, fn_roots)
+                if "/open-metadata/" in value:
+                    fn_roots[target] = value
+
         for node in ast.walk(fn):
             # url = ...
             if (raw_url is None and isinstance(node, ast.Assign)
                     and any(isinstance(t, ast.Name) and t.id == "url" for t in node.targets)):
-                raw_url = _flatten(node.value, roots)
+                raw_url = _flatten(node.value, fn_roots)
                 lint = lint_url(raw_url)
                 path = canon_path(raw_url)