diff --git a/bandwidth.yml b/bandwidth.yml
index 84e00b3..5927a5e 100644
--- a/bandwidth.yml
+++ b/bandwidth.yml
@@ -2436,6 +2436,7 @@ components:
         - media
     rbmCardContent:
       type: object
+      description: Must contain at least one of title, description, or media to be valid.
       properties:
         title:
           type: string
@@ -2478,7 +2479,6 @@ components:
           $ref: '#/components/schemas/multiChannelFullActions'
       required:
         - orientation
-        - thumbnailImageAlignment
         - cardContent
     standaloneCardOrientationEnum:
       type: string
@@ -2489,8 +2489,8 @@ components:
     thumbnailAlignmentEnum:
       type: string
       description: >-
-        The alignment of the thumbnail image in the card. Only applicable if the
-        card using horizontal orientation.
+        The alignment of the thumbnail image in the card. Required when
+        orientation is HORIZONTAL.
       enum:
         - LEFT
         - RIGHT
@@ -2505,6 +2505,7 @@ components:
           type: array
           items:
             $ref: '#/components/schemas/rbmCardContent'
+          minItems: 2
           maxItems: 10
         suggestions:
           $ref: '#/components/schemas/multiChannelFullActions'
@@ -2568,7 +2569,11 @@ components:
       type: string
       description: >-
         Defines the layout of the WebView on a mobile device. It must be defined
-        when application is set to `WEBVIEW`
+
+        when application is set to `WEBVIEW` and must not be set when
+        application
+
+        is set to `BROWSER`.
 
         - `FULL` WebView takes the full screen.
 
@@ -2626,12 +2631,16 @@ components:
             latitude:
               type: string
               format: double
-              description: The latitude of the location.
+              description: >-
+                The latitude of the location. Must be in range [-90.000000,
+                90.000000].
               example: '37.7749'
             longitude:
               type: string
               format: double
-              description: The longitude of the location.
+              description: >-
+                The longitude of the location. Must be in range [-180.000000,
+                180.000000].
               example: '-122.4194'
             label:
               type: string
@@ -2655,12 +2664,16 @@ components:
             startTime:
               type: string
               format: date-time
-              description: The start time of the event.
+              description: >-
+                The start time of the event. Must be a valid RFC-3339 value,
+                e.g., 2021-03-14T01:59:26Z or 2021-03-13T20:59:26-05:00.
               example: 2022-09-14T18:20:16.000Z
             endTime:
               type: string
               format: date-time
-              description: The end time of the event.
+              description: >-
+                The end time of the event. Must be a valid RFC-3339 value, e.g.,
+                2021-03-14T01:59:26Z or 2021-03-13T20:59:26-05:00.
               example: 2022-09-14T18:20:16.000Z
             description:
               type: string
@@ -2680,7 +2693,7 @@ components:
             url:
               type: string
               format: uri
-              description: The URL to open in browser.
+              description: The URL to open in browser. Must use http:// or https:// scheme.
               example: https://dev.bandwidth.com
               maxLength: 2048
             application:
diff --git a/docs/MultiChannelAction.md b/docs/MultiChannelAction.md
index 6209fce..2dd7101 100644
--- a/docs/MultiChannelAction.md
+++ b/docs/MultiChannelAction.md
@@ -8,14 +8,14 @@
 | **text** | **String** | Displayed text for user to click |  |
 | **postback_data** | **String** | Base64 payload the customer receives when the reply is clicked. |  |
 | **phone_number** | **String** | The phone number to dial. Must be E164 format. |  |
-| **latitude** | **Float** | The latitude of the location. |  |
-| **longitude** | **Float** | The longitude of the location. |  |
+| **latitude** | **Float** | The latitude of the location. Must be in range [-90.000000, 90.000000]. |  |
+| **longitude** | **Float** | The longitude of the location. Must be in range [-180.000000, 180.000000]. |  |
 | **label** | **String** | The label of the location. | [optional] |
 | **title** | **String** | The title of the event. |  |
-| **start_time** | **Time** | The start time of the event. |  |
-| **end_time** | **Time** | The end time of the event. |  |
+| **start_time** | **Time** | The start time of the event. Must be a valid RFC-3339 value, e.g., 2021-03-14T01:59:26Z or 2021-03-13T20:59:26-05:00. |  |
+| **end_time** | **Time** | The end time of the event. Must be a valid RFC-3339 value, e.g., 2021-03-14T01:59:26Z or 2021-03-13T20:59:26-05:00. |  |
 | **description** | **String** | The description of the event. | [optional] |
-| **url** | **String** | The URL to open in browser. |  |
+| **url** | **String** | The URL to open in browser. Must use http:// or https:// scheme. |  |
 | **application** | [**RbmOpenUrlEnum**](RbmOpenUrlEnum.md) |  | [optional] |
 | **webview_view_mode** | [**RbmWebViewEnum**](RbmWebViewEnum.md) |  | [optional] |
 
diff --git a/docs/MultiChannelActionCalendarEvent.md b/docs/MultiChannelActionCalendarEvent.md
index 210f98c..d493b05 100644
--- a/docs/MultiChannelActionCalendarEvent.md
+++ b/docs/MultiChannelActionCalendarEvent.md
@@ -8,8 +8,8 @@
 | **text** | **String** | Displayed text for user to click |  |
 | **postback_data** | **String** | Base64 payload the customer receives when the reply is clicked. |  |
 | **title** | **String** | The title of the event. |  |
-| **start_time** | **Time** | The start time of the event. |  |
-| **end_time** | **Time** | The end time of the event. |  |
+| **start_time** | **Time** | The start time of the event. Must be a valid RFC-3339 value, e.g., 2021-03-14T01:59:26Z or 2021-03-13T20:59:26-05:00. |  |
+| **end_time** | **Time** | The end time of the event. Must be a valid RFC-3339 value, e.g., 2021-03-14T01:59:26Z or 2021-03-13T20:59:26-05:00. |  |
 | **description** | **String** | The description of the event. | [optional] |
 
 ## Example
diff --git a/docs/RbmActionBase.md b/docs/RbmActionBase.md
index a3e18df..59aa91c 100644
--- a/docs/RbmActionBase.md
+++ b/docs/RbmActionBase.md
@@ -16,7 +16,7 @@ require 'bandwidth-sdk'
 instance = Bandwidth::RbmActionBase.new(
   type: null,
   text: Hello world,
-  postback_data: [B@1a99692
+  postback_data: [B@3ecbfba1
 )
 ```
 
diff --git a/docs/RbmActionOpenUrl.md b/docs/RbmActionOpenUrl.md
index 806d991..e03b865 100644
--- a/docs/RbmActionOpenUrl.md
+++ b/docs/RbmActionOpenUrl.md
@@ -7,7 +7,7 @@
 | **type** | [**RbmActionTypeEnum**](RbmActionTypeEnum.md) |  |  |
 | **text** | **String** | Displayed text for user to click |  |
 | **postback_data** | **String** | Base64 payload the customer receives when the reply is clicked. |  |
-| **url** | **String** | The URL to open in browser. |  |
+| **url** | **String** | The URL to open in browser. Must use http:// or https:// scheme. |  |
 | **application** | [**RbmOpenUrlEnum**](RbmOpenUrlEnum.md) |  | [optional] |
 | **webview_view_mode** | [**RbmWebViewEnum**](RbmWebViewEnum.md) |  | [optional] |
 
diff --git a/docs/RbmActionViewLocation.md b/docs/RbmActionViewLocation.md
index e623961..8457bbd 100644
--- a/docs/RbmActionViewLocation.md
+++ b/docs/RbmActionViewLocation.md
@@ -7,8 +7,8 @@
 | **type** | [**RbmActionTypeEnum**](RbmActionTypeEnum.md) |  |  |
 | **text** | **String** | Displayed text for user to click |  |
 | **postback_data** | **String** | Base64 payload the customer receives when the reply is clicked. |  |
-| **latitude** | **Float** | The latitude of the location. |  |
-| **longitude** | **Float** | The longitude of the location. |  |
+| **latitude** | **Float** | The latitude of the location. Must be in range [-90.000000, 90.000000]. |  |
+| **longitude** | **Float** | The longitude of the location. Must be in range [-180.000000, 180.000000]. |  |
 | **label** | **String** | The label of the location. | [optional] |
 
 ## Example
diff --git a/docs/RbmStandaloneCard.md b/docs/RbmStandaloneCard.md
index 35d88d2..2e94374 100644
--- a/docs/RbmStandaloneCard.md
+++ b/docs/RbmStandaloneCard.md
@@ -5,7 +5,7 @@
 | Name | Type | Description | Notes |
 | ---- | ---- | ----------- | ----- |
 | **orientation** | [**StandaloneCardOrientationEnum**](StandaloneCardOrientationEnum.md) |  |  |
-| **thumbnail_image_alignment** | [**ThumbnailAlignmentEnum**](ThumbnailAlignmentEnum.md) |  |  |
+| **thumbnail_image_alignment** | [**ThumbnailAlignmentEnum**](ThumbnailAlignmentEnum.md) |  | [optional] |
 | **card_content** | [**RbmCardContent**](RbmCardContent.md) |  |  |
 | **suggestions** | [**Array<MultiChannelAction>**](MultiChannelAction.md) | An array of suggested actions for the recipient. | [optional] |
 
diff --git a/docs/RbmSuggestionResponse.md b/docs/RbmSuggestionResponse.md
index 4730a01..18b8afd 100644
--- a/docs/RbmSuggestionResponse.md
+++ b/docs/RbmSuggestionResponse.md
@@ -14,7 +14,7 @@ require 'bandwidth-sdk'
 
 instance = Bandwidth::RbmSuggestionResponse.new(
   text: Yes, I would like to proceed,
-  postback_data: [B@1a99692
+  postback_data: [B@3ecbfba1
 )
 ```
 
diff --git a/lib/bandwidth-sdk/configuration.rb b/lib/bandwidth-sdk/configuration.rb
index 751eda9..010085e 100644
--- a/lib/bandwidth-sdk/configuration.rb
+++ b/lib/bandwidth-sdk/configuration.rb
@@ -217,7 +217,6 @@ def initialize
         body = JSON.parse(response.body)
         @access_token = body['access_token']
         @access_token_expiration = Time.now + body['expires_in']
-        @access_token
       }
 
       yield(self) if block_given?
diff --git a/lib/bandwidth-sdk/models/multi_channel_action_calendar_event.rb b/lib/bandwidth-sdk/models/multi_channel_action_calendar_event.rb
index b181880..0a7fa19 100644
--- a/lib/bandwidth-sdk/models/multi_channel_action_calendar_event.rb
+++ b/lib/bandwidth-sdk/models/multi_channel_action_calendar_event.rb
@@ -26,10 +26,10 @@ class MultiChannelActionCalendarEvent < ApiModelBase
     # The title of the event.
     attr_accessor :title
 
-    # The start time of the event.
+    # The start time of the event. Must be a valid RFC-3339 value, e.g., 2021-03-14T01:59:26Z or 2021-03-13T20:59:26-05:00.
     attr_accessor :start_time
 
-    # The end time of the event.
+    # The end time of the event. Must be a valid RFC-3339 value, e.g., 2021-03-14T01:59:26Z or 2021-03-13T20:59:26-05:00.
     attr_accessor :end_time
 
     # The description of the event.
diff --git a/lib/bandwidth-sdk/models/rbm_action_open_url.rb b/lib/bandwidth-sdk/models/rbm_action_open_url.rb
index 0dbcf74..3fbebd7 100644
--- a/lib/bandwidth-sdk/models/rbm_action_open_url.rb
+++ b/lib/bandwidth-sdk/models/rbm_action_open_url.rb
@@ -23,7 +23,7 @@ class RbmActionOpenUrl < ApiModelBase
     # Base64 payload the customer receives when the reply is clicked.
     attr_accessor :postback_data
 
-    # The URL to open in browser.
+    # The URL to open in browser. Must use http:// or https:// scheme.
     attr_accessor :url
 
     attr_accessor :application
diff --git a/lib/bandwidth-sdk/models/rbm_action_view_location.rb b/lib/bandwidth-sdk/models/rbm_action_view_location.rb
index 90dd45f..211a54b 100644
--- a/lib/bandwidth-sdk/models/rbm_action_view_location.rb
+++ b/lib/bandwidth-sdk/models/rbm_action_view_location.rb
@@ -23,10 +23,10 @@ class RbmActionViewLocation < ApiModelBase
     # Base64 payload the customer receives when the reply is clicked.
     attr_accessor :postback_data
 
-    # The latitude of the location.
+    # The latitude of the location. Must be in range [-90.000000, 90.000000].
     attr_accessor :latitude
 
-    # The longitude of the location.
+    # The longitude of the location. Must be in range [-180.000000, 180.000000].
     attr_accessor :longitude
 
     # The label of the location.
diff --git a/lib/bandwidth-sdk/models/rbm_card_content.rb b/lib/bandwidth-sdk/models/rbm_card_content.rb
index bcbbe75..64234a2 100644
--- a/lib/bandwidth-sdk/models/rbm_card_content.rb
+++ b/lib/bandwidth-sdk/models/rbm_card_content.rb
@@ -14,6 +14,7 @@
 require 'time'
 
 module Bandwidth
+  # Must contain at least one of title, description, or media to be valid.
   class RbmCardContent < ApiModelBase
     # The title of the card. Must be 200 characters or less.
     attr_accessor :title
diff --git a/lib/bandwidth-sdk/models/rbm_message_carousel_card.rb b/lib/bandwidth-sdk/models/rbm_message_carousel_card.rb
index 31e1e33..e402d3b 100644
--- a/lib/bandwidth-sdk/models/rbm_message_carousel_card.rb
+++ b/lib/bandwidth-sdk/models/rbm_message_carousel_card.rb
@@ -132,6 +132,10 @@ def list_invalid_properties
         invalid_properties.push('invalid value for "card_contents", number of items must be less than or equal to 10.')
       end
 
+      if @card_contents.length < 2
+        invalid_properties.push('invalid value for "card_contents", number of items must be greater than or equal to 2.')
+      end
+
       if !@suggestions.nil? && @suggestions.length > 11
         invalid_properties.push('invalid value for "suggestions", number of items must be less than or equal to 11.')
       end
@@ -146,6 +150,7 @@ def valid?
       return false if @card_width.nil?
       return false if @card_contents.nil?
       return false if @card_contents.length > 10
+      return false if @card_contents.length < 2
       return false if !@suggestions.nil? && @suggestions.length > 11
       true
     end
@@ -171,6 +176,10 @@ def card_contents=(card_contents)
         fail ArgumentError, 'invalid value for "card_contents", number of items must be less than or equal to 10.'
       end
 
+      if card_contents.length < 2
+        fail ArgumentError, 'invalid value for "card_contents", number of items must be greater than or equal to 2.'
+      end
+
       @card_contents = card_contents
     end
 
diff --git a/lib/bandwidth-sdk/models/rbm_standalone_card.rb b/lib/bandwidth-sdk/models/rbm_standalone_card.rb
index e2dcc85..4462b19 100644
--- a/lib/bandwidth-sdk/models/rbm_standalone_card.rb
+++ b/lib/bandwidth-sdk/models/rbm_standalone_card.rb
@@ -106,8 +106,6 @@ def initialize(attributes = {})
 
       if attributes.key?(:'thumbnail_image_alignment')
         self.thumbnail_image_alignment = attributes[:'thumbnail_image_alignment']
-      else
-        self.thumbnail_image_alignment = nil
       end
 
       if attributes.key?(:'card_content')
@@ -132,10 +130,6 @@ def list_invalid_properties
         invalid_properties.push('invalid value for "orientation", orientation cannot be nil.')
       end
 
-      if @thumbnail_image_alignment.nil?
-        invalid_properties.push('invalid value for "thumbnail_image_alignment", thumbnail_image_alignment cannot be nil.')
-      end
-
       if @card_content.nil?
         invalid_properties.push('invalid value for "card_content", card_content cannot be nil.')
       end
@@ -152,7 +146,6 @@ def list_invalid_properties
     def valid?
       warn '[DEPRECATED] the `valid?` method is obsolete'
       return false if @orientation.nil?
-      return false if @thumbnail_image_alignment.nil?
       return false if @card_content.nil?
       return false if !@suggestions.nil? && @suggestions.length > 11
       true
@@ -168,16 +161,6 @@ def orientation=(orientation)
       @orientation = orientation
     end
 
-    # Custom attribute writer method with validation
-    # @param [Object] thumbnail_image_alignment Value to be assigned
-    def thumbnail_image_alignment=(thumbnail_image_alignment)
-      if thumbnail_image_alignment.nil?
-        fail ArgumentError, 'thumbnail_image_alignment cannot be nil'
-      end
-
-      @thumbnail_image_alignment = thumbnail_image_alignment
-    end
-
     # Custom attribute writer method with validation
     # @param [Object] card_content Value to be assigned
     def card_content=(card_content)