BG-17Credit transferBT-81Payment means type code
Official rule text
[DE-R-023-1] If "Payment means type code" (BT-81) contains a code for credit transfer (30, 58), "CREDIT TRANSFER" (BG-17) shall be provided.
Why this error occurs
This rule only applies when another field has a certain value (for example a payment means code or an invoice type). Your file triggers the condition but does not provide the data that then becomes mandatory, or provides data that is then forbidden.
How to fix it
Either change the triggering value so the condition no longer applies, or add/remove the dependent elements as the rule text describes. Check the condition in the XPath test above to see exactly which value triggers it.
What the validator checks
Checked element (context):
UBL
(/ubl-invoice:Invoice/cac:PaymentMeans[cbc:PaymentMeansCode = (30,58)] | /ubl-creditnote:CreditNote/cac:PaymentMeans[cbc:PaymentMeansCode = (30,58)])[$supplierCountryIsDE and $customerCountryIsDE]Test (XPath):
cac:PayeeFinancialAccountCheck your invoice
Drop your XML or PDF on the validator and every failed rule is linked to its page here. Free, no account, the file is not stored.
Same check via API:
curl -F file=@invoice.xml https://einvoicechecker.com/v1/validateRelated rules
DE-R-024-2If "Payment means type code" contains a code for payment card (48, 54, 55), BG-17 and…DE-R-025-2If "Payment means type code" contains a code for direct debit (59), BG-17 and BG-18…DE-R-023-2If "Payment means type code" contains a code for credit transfer (30, 58), BG-18 and…DE-R-019The element "Payment account identifier" should contain a valid IBAN if code 58 SEPA…DE-R-020The element "Debited account identifier" should contain a valid IBAN if code 59 SEPA…DE-R-024-1If "Payment means type code" contains a code for payment card (48, 54, 55), "PAYMENT…DE-R-025-1If "Payment means type code" contains a code for direct debit (59), "DIRECT DEBIT"…
Frequently asked questions
What does DE-R-023-1 mean?
DE-R-023-1 is a peppol national rule: If "Payment means type code" (BT-81) contains a code for credit transfer (30, 58), "CREDIT TRANSFER" (BG-17) shall be provided.
Will my invoice be rejected because of DE-R-023-1?
Yes. DE-R-023-1 is flagged "fatal"; validators (KoSIT, Peppol access points, the German ZRE/OZG-RE portals, KSeF) reject the invoice until it is fixed.
Which formats does DE-R-023-1 apply to?
Only when the seller (or for some rules the buyer) is in the named country: the rule is triggered by the country code of the party. Dutch rules implement NLCIUS, German rules the XRechnung requirements inside Peppol. Syntax: UBL.
Source: Peppol BIS Billing 3.0.20 national rules (November 2025). Catalogue generated from the official rule sets on 2026-10-15.