# DE-R-030

Source: https://xmlvalid.com/rules/DE-R-030

> If both supplier and customer are located in Germany, and if the group "DIRECT DEBIT" (BG-19) is delivered, the element "Bank assigned creditor identifier" (BT-90) shall be provided.

- Level: error
- Rule sets: Peppol BIS Billing 3.0 rules 3.0.21
- Context: `(/ubl-invoice:Invoice | /ubl-creditnote:CreditNote)[$supplierCountryIsDE and $customerCountryIsDE]`
- Test: `not(cac:PaymentMeans/cac:PaymentMandate) or (cac:AccountingSupplierParty/cac:Party/cac:PartyIdentification/cbc:ID[@schemeID='SEPA'] | cac:PayeeParty/cac:PartyIdentification/cbc:ID[@schemeID='SEPA'])`

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