EHF Pre-Award Catalogue and Request 1.0 RC1 | Rules | EHF-PAC-B03701

Message: Attribute 'schemeID' MUST be present.
Context: /ubl:Catalogue/cac:ReceiverParty/cbc:EndpointID
Test: @schemeID
Usage: / ubl:Catalogue / cac:ReceiverParty / cbc:EndpointID