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SUBTYPE_CONSTRAINT ap239_prdi_restrict_product_definition_relationship_subtypes FOR product_definition_relationship; ONEOF (attachment_slot_on_product, breakdown_context, breakdown_element_usage, breakdown_of, interface_definition_connection, interface_definition_for, product_in_attachment_slot); END_SUBTYPE_CONSTRAINT; -- ap239_prdi_restrict_product_definition_relationship_subtypes |