PEPPOL-COMMON-R043: Belgian enterprise number MUST be stated in the correct format

The rule requires that any of the elements cbc:EndpointID, cac:PartyIdentification/cbc:ID, or cbc:CompanyID with @schemeID = '0208' (Belgian enterprise number) must contain a value that is exactly 10 digits and passes the validation function u:mod97-0208. The test uses normalize-space(), so surrounding whitespace is ignored, but the value itself must consist only of digits with no internal spaces. A document fails if any of these elements with that scheme ID is present but its value does not match the pattern ^[0-9]{10}$ or fails the mod97 check.

For each of the elements cbc:EndpointID, cac:PartyIdentification/cbc:ID, and cbc:CompanyID that has @schemeID = '0208', ensure the value is a valid Belgian enterprise number: exactly 10 digits, no spaces, hyphens, or other separators, and it must satisfy the u:mod97-0208 check. If the number is incorrect, replace it with the correct 10-digit number from the official source. Check the system that generates the invoice to ensure it outputs the number in the required format.