diff --git a/examples/functions/timetable/Netex_01.4_Bus_SimpleTimetable_WithConnection.xml b/examples/functions/timetable/Netex_01.4_Bus_SimpleTimetable_WithConnection.xml
index e632a17c2..0f432f7a2 100644
--- a/examples/functions/timetable/Netex_01.4_Bus_SimpleTimetable_WithConnection.xml
+++ b/examples/functions/timetable/Netex_01.4_Bus_SimpleTimetable_WithConnection.xml
@@ -1303,7 +1303,7 @@ The Calendar is shown coded as
 								</Call>
 							</calls>
 							<PassengerCarryingRequirementsView>
-								<PassengerCapacity>
+								<PassengerCapacity version="any" id="PC1">
 									<SeatingCapacity>22</SeatingCapacity>
 									<StandingCapacity>44</StandingCapacity>
 									<SpecialPlaceCapacity>2</SpecialPlaceCapacity>
diff --git a/examples/standards/noptis/NeTEx_Calendar_TimetableAndVehicleSchedule_PB2.xml b/examples/standards/noptis/NeTEx_Calendar_TimetableAndVehicleSchedule_PB2.xml
index f54b901e5..a2ce23369 100644
--- a/examples/standards/noptis/NeTEx_Calendar_TimetableAndVehicleSchedule_PB2.xml
+++ b/examples/standards/noptis/NeTEx_Calendar_TimetableAndVehicleSchedule_PB2.xml
@@ -324,7 +324,7 @@ is relevant for supplying an Integrator with partial data from multiple sources.
 								</Call>
 							</calls>
 							<PassengerCarryingRequirementsView>
-								<PassengerCapacity>
+								<PassengerCapacity version="any" id="PC1">
 									<TotalCapacity>90</TotalCapacity>
 									<SeatingCapacity>50</SeatingCapacity>
 									<PushchairCapacity>1</PushchairCapacity>
diff --git a/xsd/netex_framework/netex_reusableComponents/netex_vehicleType_version.xsd b/xsd/netex_framework/netex_reusableComponents/netex_vehicleType_version.xsd
index a357ba8de..9687442eb 100644
--- a/xsd/netex_framework/netex_reusableComponents/netex_vehicleType_version.xsd
+++ b/xsd/netex_framework/netex_reusableComponents/netex_vehicleType_version.xsd
@@ -593,7 +593,7 @@ Rail transport, Roads and Road transport
 							<xsd:group ref="PassengerCapacityGroup"/>
 						</xsd:sequence>
 					</xsd:sequence>
-					<xsd:attribute name="id" type="PassengerCapacityIdType" use="optional">
+					<xsd:attribute name="id" type="PassengerCapacityIdType" use="required">
 						<xsd:annotation>
 							<xsd:documentation>Identifier of PASSENGER CAPACITY.</xsd:documentation>
 						</xsd:annotation>