Fix PEPPOL-EN16931-R080: More than one project reference

What does PEPPOL-EN16931-R080 mean?

Peppol allows exactly one project reference at document level so the invoice can be assigned to a single project.

Common causes of PEPPOL-EN16931-R080

• Several SpecifiedProcuringProject elements at header level.

How to fix PEPPOL-EN16931-R080

1. Find the faulty spot in the XML. Open the XML of the invoice and go to field BT-11 along this XPath://rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransaction/ram:ApplicableHeaderTradeAgreement/ram:SpecifiedProcuringProject/ram:ID
2. Apply the fix. Reduce the project references to exactly one 'ram:SpecifiedProcuringProject' (BT-11) at header level.
3. Validate again. Save the file and validate it again to check that PEPPOL-EN16931-R080 is no longer reported.

Related error codes

Check PEPPOL-EN16931-R080 automatically

Instead of digging through the XML by hand you can validate your ZUGFeRD or XRechnung file online – upload the PDF or the XML and you get every error with rule ID, affected field, fix and XPath, as a readable report or as JSON through the API.