What it means
When a Danish seller sends a credit note to a Danish buyer, the amount due (BT-115) must not be below zero. Zero is allowed. Invoices are not checked by this rule.
Why it matters
A credit note already says that the amounts go back to the buyer. A negative amount on top of that turns the meaning round, so the buyer's system cannot tell who owes whom, and the file is rejected.
How to fix it
Open the credit note in your invoicing software and look for minus signs on quantities, unit prices or lines. Credit notes normally carry positive amounts. If the total is negative because the figures really make the buyer owe you money, you need an invoice instead.
The rule as published
Read the rule on the publisher's site
Where this rule applies
| Rule set | Version |
|---|---|
| Peppol BIS Billing 3.0 (invoice) | 2026.5 |
| Peppol BIS Billing 3.0 (credit note) | 2026.5 |
Check your file
Drop your e-invoice to see whether DK-R-016 still fails, and which other rules do.
Related rules
- DK-R-017 A Danish buyer's company registration number must use scheme 0184
- DK-R-014 A Danish seller's company registration number must use scheme 0184
- DK-R-013 Party identifiers on Danish invoices need a scheme identifier
- DK-R-011 FIK references with 71# or 75# need 15 or 16 digits after the prefix
- DK-R-010 FIK needs a 71#, 73# or 75# reference and an 8-character number
- DK-R-009 Giro payment IDs with 04# or 15# need 16 digits after the prefix