[IBR-002-OM] - The unique identifier (“UUID”) (BTOM-002) must be provided on the invoice and must contain only letters, digits, and dashes.
IBR-002-OMubl:Invoice | cn:CreditNotematches(normalize-space(cbc:UUID), '^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-4[0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}$')