Message

URI for a Qualification Reference external reference attachment MUST be expressed in a UUID syntax (RFC 4122)

Context
ubl:TendererQualification/cac:AdditionalDocumentReference/cac:Attachment/cac:ExternalReference/cbc:URI
Test
matches(normalize-space(.),'^[a-fA-F0-9]{8}(\-[a-fA-F0-9]{4}){3}\-[a-fA-F0-9]{12}$')
Usage
/ t019:QualificationApplicationRequest / cac:AdditionalDocumentReference / cac:Attachment / cac:ExternalReference / cbc:URI