# DE-R-001

Source: https://xmlvalid.com/rules/DE-R-001

> If both supplier and customer are located in Germany, an invoice shall contain information on "PAYMENT INSTRUCTIONS" (BG-16).

- Level: error
- Rule sets: Peppol BIS Billing 3.0 rules 3.0.21
- Context: `(/ubl-invoice:Invoice | /ubl-creditnote:CreditNote)[$supplierCountryIsDE and $customerCountryIsDE]`
- Test: `cac:PaymentMeans`

Validate a document against these rules: https://xmlvalid.com/validate