PEPPOL-T012-R002
- Message
 The Request Identifier value MUST be expressed in a UUID syntax (RFC 4122).
- Context
 query:QueryResponse- Test
 matches(normalize-space(./@requestId), '^[0-9a-fA-F]{8}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{12}$')- Usage