# DK-R-009

Source: https://xmlvalid.com/rules/DK-R-009

> For Danish Suppliers if the PaymentID is prefixed with 04# or 15# the 16 digits instruction Id must be added to the PaymentID eg. "04#1234567890123456" when Payment means equals 50 (Giro)

- Level: error
- Rule sets: Peppol BIS Billing 3.0 rules 3.0.21
- Context: `ubl-invoice:Invoice[$DKSupplierCountry = 'DK' and $DKCustomerCountry = 'DK']/cac:PaymentMeans`
- Test: `not((cbc:PaymentMeansCode = '50') and ((substring(cbc:PaymentID, 1, 3) = '04#') or (substring(cbc:PaymentID, 1, 3) = '15#')) and not(string-length(cbc:PaymentID) = 19) )`

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