DE-R-025-1

If both supplier and customer are located in Germany, and if "Payment means type code" (BT-81) contains a code for direct debit (59), "DIRECT DEBIT" (BG-19) shall be provided.

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What the rule checks

As the rule set's publisher wrote it. The rule runs on every element the context matches, and fails where the test is false; the validator reports the line of that element.

Context
(/ubl-invoice:Invoice/cac:PaymentMeans[normalize-space(cbc:PaymentMeansCode) = '59'] | /ubl-creditnote:CreditNote/cac:PaymentMeans[normalize-space(cbc:PaymentMeansCode) = '59'])[$supplierCountryIsDE and $customerCountryIsDE]
Test
cac:PaymentMandate

Checked with Peppol BIS Billing 3.0 Invoice, Peppol BIS Billing 3.0 Credit Note