diff --git a/IFC4x3/Sections/Core data schemas/Schemas/IfcProductExtension/Entities/IfcRelAssociatesMaterial/DocEntity.xml b/IFC4x3/Sections/Core data schemas/Schemas/IfcProductExtension/Entities/IfcRelAssociatesMaterial/DocEntity.xml
index 979254651..4aa70ecb1 100644
--- a/IFC4x3/Sections/Core data schemas/Schemas/IfcProductExtension/Entities/IfcRelAssociatesMaterial/DocEntity.xml	
+++ b/IFC4x3/Sections/Core data schemas/Schemas/IfcProductExtension/Entities/IfcRelAssociatesMaterial/DocEntity.xml	
@@ -27,9 +27,9 @@
     'IFCSHAREDBLDGELEMENTS.IFCWINDOWSTYLE',
     'IFCSHAREDBLDGELEMENTS.IFCDOORSTYLE',
     'IFCSTRUCTURALANALYSISDOMAIN.IFCSTRUCTURALMEMBER',
-    'IFCPRODUCTEXTENSION.IFCPORT']) = 0) 
+    'IFCPRODUCTEXTENSION.IFCPORT',
+    'IFCSHAREDINFRASTRUCTUREELEMENTS.IFCGEOSCIENCEOBSERVATION']) = 0) 
 )) = 0</Expression>
 		</DocWhereRule>
 	</WhereRules>
 </DocEntity>
-