No shape representation identifier shall be used twice within the product representation of an element 

Based on          IFC2x3

Initiator            ISG Meeting-Budapest

Effects              Coordination View 2.0

Date                    2011 10 24


Any product representation of an element may have multiple shape representations. However there shall be no two or more IfcShapeRepresentations having the same RepresentationIdentifier within one IfcProductDefinitionShape.


     * It is not allowed to export two "Body" shape representations for an element. The following snipped is incorrect and will lead to a validation error:

     #200= IFCSHAPEREPRESENTATION(#100,'Body','CSG',(#210)); /*error*/

     #300= IFCSHAPEREPRESENTATION(#110,'Body','Brep',(#310)); /*error*/

     #400= IFCPRODUCTDEFINITIONSHAPE($,$,(#300,#200)); /*error*/

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