# DE-R-023-1

Source: https://xmlvalid.com/rules/DE-R-023-1

> If both supplier and customer are German, if "Payment means type code" (BT-81) contains a code for credit transfer (30, 58), "CREDIT TRANSFER" (BG-17) shall be provided.

- Level: error
- Rule sets: Peppol BIS Billing 3.0 rules 3.0.21
- Context: `(/ubl-invoice:Invoice/cac:PaymentMeans[normalize-space(cbc:PaymentMeansCode) = ('30','58')] | /ubl-creditnote:CreditNote/cac:PaymentMeans[normalize-space(cbc:PaymentMeansCode) = ('30','58')])[$supplierCountryIsDE and $customerCountryIsDE]`
- Test: `cac:PayeeFinancialAccount`

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