# DK-R-011

Source: https://xmlvalid.com/rules/DK-R-011

> For Danish Suppliers if the PaymentID is prefixed with 71# or 75# the 15-16 digits instruction Id must be added to the PaymentID eg. "71#1234567890123456" when payment Method equals 93 (FIK)

- 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 = '93') and ((substring(cbc:PaymentID, 1, 3) = '71#') or (substring(cbc:PaymentID, 1, 3) = '75#')) and not((string-length(cbc:PaymentID) = 18) or (string-length(cbc:PaymentID) = 19)) )`

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