DK-R-006:For Danish suppliers bank account and registration account is mandatory if...
Fix: Review your Invoice XML structure and correct the issue described by this rule. Check relevant cbc: and cac: elements per OIOUBL (Denmark).
Danish suppliers using payment means 31 (credit transfer) or 42 (payment to bank account) must provide both bank account number and registration number.
Engine Classification
Financial or legal field · Modification blocked by policy
Reason: Danish banking requirements mandate specific account information for payment processing. Bank details must be verified with your financial institution.
What is DK-R-006?
DK-R-006 is a fatal validation rule defined in the OIOUBL (Denmark) specification (DNK national rules).
When this rule fires, the invoice is rejected by Peppol access points and never reaches the buyer.
Why This Error Matters
Invoice will be rejected by Danish validation. Bank transfers require complete account information.
DK-R-006 is a hard failure — the invoice must be corrected and re-sent before it can reach the recipient.
Validator Behavior
- ·Causes invoice rejection
- ·Fails UBL schema validation
- ·Error returned: DK-R-006
- ·Specification: OIOUBL (Denmark)
How to Fix It
Identify the issue in your invoice
Danish suppliers using payment means 31 (credit transfer) or 42 (payment to bank account) must provide both bank account number and registration number.
Correct this in your invoicing software
Review your Invoice XML structure and correct the issue described by this rule. Check relevant cbc: and cac: elements per OIOUBL (Denmark).
Re-export and validate
Generate a new invoice export from your accounting system and re-validate to confirm DK-R-006 is resolved.
Before / After
<Invoice> <!-- Issue: Danish suppliers using credit transfer must provide bank acc --> </Invoice>
<Invoice> <!-- Issue resolved per OIOUBL (Denmark) --> </Invoice>
Technical Reference
Common Causes
- ·Bank account missing for credit transfer payment
- ·Registration number not provided
- ·Payment means changed without adding bank details
- ·ERP does not export bank details for this payment type
- ·Bank information stored separately from invoice
Seeing this in production? The API handles DK-R-006 automatically. See the fix response →
Frequently Asked Questions
Danish suppliers using payment means 31 (credit transfer) or 42 (payment to bank account) must provide both bank account number and registration number.
Review your Invoice XML structure and correct the issue described by this rule. Check relevant cbc: and cac: elements per OIOUBL (Denmark). You can also use Invoice Navigator's compliance engine to correct this automatically in your pipeline.
Yes, DK-R-006 is a critical error that will cause invoice rejection. It must be fixed before submission.
Many instances of DK-R-006 can be automatically corrected using Invoice Navigator's compliance engine. The fix is applied in your pipeline with full audit evidence.
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Last updated: 14 April 2026
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