diff --git a/.gitignore b/.gitignore
index 3ce15e17c..744889bcc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -88,3 +88,4 @@ fabric.properties
 # Editor-based Rest Client
 .idea/httpRequests
 
+/.idea
diff --git a/examples/functions/timetable/Netex_01.2_Bus_SimpleTimetable_WithTimings.xml b/examples/functions/timetable/Netex_01.2_Bus_SimpleTimetable_WithTimings.xml
index 5aca118bd..376f63df2 100644
--- a/examples/functions/timetable/Netex_01.2_Bus_SimpleTimetable_WithTimings.xml
+++ b/examples/functions/timetable/Netex_01.2_Bus_SimpleTimetable_WithTimings.xml
@@ -420,6 +420,10 @@ The Calendar is shown coded as
 											<Advertised>true</Advertised>
 										</NoticeAssignment>
 									</noticeAssignments>
+									<!-- check for CheckConstraint. V2.1 -->
+									<CheckConstraint id="mybus:cc:1" version="any">
+									<Congestion>noWaiting</Congestion>
+									</CheckConstraint>
 								</StopPointInJourneyPattern>
 								<StopPointInJourneyPattern version="any" order="2" id="hde:spijp_24o_02">
 									<ScheduledStopPointRef version="any" ref="mybus:SSP_002"/>
diff --git a/xsd/netex_part_1/part1_tacticalPlanning/netex_servicePattern_version.xsd b/xsd/netex_part_1/part1_tacticalPlanning/netex_servicePattern_version.xsd
index 05f21f6d0..cb75727ab 100644
--- a/xsd/netex_part_1/part1_tacticalPlanning/netex_servicePattern_version.xsd
+++ b/xsd/netex_part_1/part1_tacticalPlanning/netex_servicePattern_version.xsd
@@ -1,13 +1,16 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<!-- edited with XMLSpy v2026 (x64) (https://www.altova.com) by Urs Stöckli (Schweizerische Bundesbahnen SBB) -->
 <xsd:schema xmlns="http://www.netex.org.uk/netex" xmlns:netex="http://www.netex.org.uk/netex" xmlns:siri="http://www.siri.org.uk/siri" xmlns:xsd="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.netex.org.uk/netex" elementFormDefault="qualified" attributeFormDefault="unqualified" version="2.0" id="netex_servicePattern_version">
 	<!-- ======================================================================= -->
 	<xsd:include schemaLocation="netex_servicePattern_support.xsd"/>
 	<xsd:include schemaLocation="../part1_tacticalPlanning/netex_fareZone_support.xsd"/>
+	<xsd:include schemaLocation="../../netex_part_1/part1_ifopt/netex_ifopt_checkConstraint_version.xsd"/>
 	<xsd:include schemaLocation="netex_journeyPattern_version.xsd"/>
 	<xsd:include schemaLocation="netex_timingPattern_version.xsd"/>
 	<xsd:include schemaLocation="netex_siteConnection_version.xsd"/>
 	<xsd:include schemaLocation="../part1_networkDescription/netex_flexibleNetwork_version.xsd"/>
 	<xsd:include schemaLocation="../../netex_part_2/part2_occupancy/netex_oc_occupancy_version.xsd"/>
+	<xsd:include schemaLocation="../../netex_part_2/part2_journeyTimes/netex_vehicleJourneyStopAssignment_version.xsd"/>
 	<!-- ======================================================================= -->
 	<xsd:annotation>
 		<xsd:appinfo>
@@ -63,8 +66,7 @@
 					<Requires>http://www.netex.org.uk/schemas/1.0/PATH/netex_prereqfile.xsd</Requires>
 				</Relation>
 				<Rights>Unclassified
-						<Copyright>CEN, Crown Copyright 2009-2023</Copyright>
-				</Rights>
+						<Copyright>CEN, Crown Copyright 2009-2023</Copyright></Rights>
 				<Source>
 					<ul>
 						<li>Derived from the Transmodel, VDV, TransXChange, NEPTUNE, BISON and Trident standards.</li>
@@ -901,6 +903,9 @@ Rail transport, Roads and Road transport
 					<xsd:documentation>Nature of use of stop, e.g. access, interchange only, or pass through. Default is Access.</xsd:documentation>
 				</xsd:annotation>
 			</xsd:element>
+			<xsd:group ref="QuayAssignmentGroup"/>
+			<xsd:element ref="AccessibilityAssessment" minOccurs="0"/>
+			<xsd:element ref="CheckConstraint" minOccurs="0"/>
 			<xsd:choice>
 				<xsd:element name="bookingArrangements" type="bookingArrangements_RelStructure" minOccurs="0">
 					<xsd:annotation>
@@ -1147,4 +1152,4 @@ Rail transport, Roads and Road transport
 			<xsd:group ref="HeadwayIntervalGroup"/>
 		</xsd:sequence>
 	</xsd:group>
-</xsd:schema>
+</xsd:schema>
\ No newline at end of file