PEPPOL-EN16931-CL002: Reason code MUST be according to subset of UNCL 5189 D.16B.
fatalUBL
What this error means and how to fix it
A Peppol BIS Billing 3.0 rule (OpenPeppol): an extra requirement for invoices sent over the Peppol network, for example electronic addresses (BT-34, BT-49), the business process (BT-23) or code values. This is an error: the invoice is rejected until it is fixed.
This error needs information only you have, so it is not repaired automatically. The free check shows every finding in the file with its location; if other errors in the same file are in the automatic set (totals, VAT breakdown, rounding, element order), the result page offers the corrected file for 9 €.
Rule text
[PEPPOL-EN16931-CL002]-Reason code MUST be according to subset of UNCL 5189 D.16B.
Where the rule is checked (XPath context and test)