diff --git a/IFC4x3/Sections/Resource definition data schemas/Schemas/IfcGeometryResource/Entities/IfcCurveBoundedPlane/DocEntity.xml b/IFC4x3/Sections/Resource definition data schemas/Schemas/IfcGeometryResource/Entities/IfcCurveBoundedPlane/DocEntity.xml
index 2792a378b..f8081cb8e 100644
--- a/IFC4x3/Sections/Resource definition data schemas/Schemas/IfcGeometryResource/Entities/IfcCurveBoundedPlane/DocEntity.xml	
+++ b/IFC4x3/Sections/Resource definition data schemas/Schemas/IfcGeometryResource/Entities/IfcCurveBoundedPlane/DocEntity.xml	
@@ -11,7 +11,7 @@
 		<DocAttribute Name="OuterBoundary" UniqueId="d59dedb7-409b-40f2-b7f6-780fbf45198e" DefinedType="IfcCurve" XsdFormat="attribute">
 			<Documentation>The outer boundary of the surface.</Documentation>
 		</DocAttribute>
-		<DocAttribute Name="InnerBoundaries" UniqueId="33e2f437-e02b-4345-af76-39640de58ff3" DefinedType="IfcCurve" AggregationType="3" AggregationLower="0" AggregationUpper="?">
+		<DocAttribute Name="InnerBoundaries" UniqueId="33e2f437-e02b-4345-af76-39640de58ff3" DefinedType="IfcCurve" AttributeFlags="1" AggregationType="3" AggregationLower="1" AggregationUpper="?">
 			<Documentation>An optional set of inner boundaries. They shall not intersect each other or the outer boundary.</Documentation>
 		</DocAttribute>
 	</Attributes>