Message

Value MUST be part of code list 'Transport Handling Unit ID scheme(openPEPPOL)'.

Context
/ubl:DespatchAdvice/cac:DespatchLine/cac:Shipment/cac:TransportHandlingUnit/cbc:ID
Test
not(@schemeID) or (some $code in $clTransportHandlingUnitIDschemID satisfies $code = @schemeID)
Code lists
Transport Handling Unit ID scheme(openPEPPOL)
Usage
/ ubl:DespatchAdvice / cac:DespatchLine / cac:Shipment / cac:TransportHandlingUnit / cbc:ID / @schemeID