DE-R-016
A Peppol Germany national rule (DE-R-*) – applies when the invoice is sent over the Peppol network to a receiver in Germany.
What this error means
DE-R-016
When both seller and buyer are located in Germany and VAT code S/Z/E/AE/K/G/L/M is used, the seller VAT identifier (BT-31), tax registration identifier (BT-32) or tax representative (BG-11) must be provided.
How to fix it
Fill in cac:PartyTaxScheme/cbc:CompanyID for the seller (e.g. DE123456789).