Message

[PEPPOL-T021-R007] schemeURI for Unsubscribe from Procedure Identifier MUST be 'urn:uuid'.

Context
ubl:UnsubscribeFromProcedureRequest/cbc:ID
Test
normalize-space(./@schemeURI) = 'urn:uuid'
Usage
/ t021:UnsubscribeFromProcedureRequest / cbc:ID / @schemeURI