diff --git a/xsd/NeTEx_publication-NoConstraint.xsd b/xsd/NeTEx_publication-NoConstraint.xsd
index 266fefb3b..74f8c8586 100644
--- a/xsd/NeTEx_publication-NoConstraint.xsd
+++ b/xsd/NeTEx_publication-NoConstraint.xsd
@@ -66,7 +66,7 @@ Roads and Road transport.
 	<!-- ======================================================================= -->
 	<xsd:element name="ParticipantRef" type="siri:ParticipantCodeType">
 		<xsd:annotation>
-			<xsd:documentation>Identifier of system requesting Data.</xsd:documentation>
+			<xsd:documentation>External code identifying the source of the data being exchanged.</xsd:documentation>
 		</xsd:annotation>
 	</xsd:element>
 	<xsd:element name="PublicationRequest" type="PublicationRequestStructure">
diff --git a/xsd/NeTEx_publication.xsd b/xsd/NeTEx_publication.xsd
index 221bc3ddc..bb274c6e7 100644
--- a/xsd/NeTEx_publication.xsd
+++ b/xsd/NeTEx_publication.xsd
@@ -251,7 +251,7 @@
 	<!-- ======================================================================= -->
 	<xsd:element name="ParticipantRef" type="siri:ParticipantCodeType">
 		<xsd:annotation>
-			<xsd:documentation>Identifier of system requesting Data.</xsd:documentation>
+			<xsd:documentation>External code identifying the source of the data being exchanged.</xsd:documentation>
 		</xsd:annotation>
 	</xsd:element>
 	<xsd:element name="PublicationRequest" type="PublicationRequestStructure">
diff --git a/xsd/NeTEx_publication_timetable.xsd b/xsd/NeTEx_publication_timetable.xsd
index 61057bc81..8c3778196 100644
--- a/xsd/NeTEx_publication_timetable.xsd
+++ b/xsd/NeTEx_publication_timetable.xsd
@@ -102,7 +102,7 @@ Roads and Road transport.
 	<!-- ======================================================================= -->
 	<xsd:element name="ParticipantRef" type="siri:ParticipantCodeType">
 		<xsd:annotation>
-			<xsd:documentation>Identifier of system requesting Data.</xsd:documentation>
+			<xsd:documentation>External code identifying the source of the data being exchanged.</xsd:documentation>
 		</xsd:annotation>
 	</xsd:element>
 	<xsd:element name="PublicationRequest" type="PublicationRequestStructure">
diff --git a/xsd/wsdl/NeTEx_publication-NoConstraint.xsd b/xsd/wsdl/NeTEx_publication-NoConstraint.xsd
index 74c3fb8ba..742c5f071 100644
--- a/xsd/wsdl/NeTEx_publication-NoConstraint.xsd
+++ b/xsd/wsdl/NeTEx_publication-NoConstraint.xsd
@@ -66,7 +66,7 @@ Roads and Road transport.
 	<!-- ======================================================================= -->
 	<xsd:element name="ParticipantRef" type="siri:ParticipantCodeType">
 		<xsd:annotation>
-			<xsd:documentation>Identifier of system requesting Data.</xsd:documentation>
+			<xsd:documentation>External code identifying the source of the data being exchanged.</xsd:documentation>
 		</xsd:annotation>
 	</xsd:element>
 	<xsd:element name="PublicationRequest" type="PublicationRequestStructure">