What it means
When the seller and the buyer are both in Germany, the seller's address must include the city (BT-37). A field that is empty or holds only spaces counts as missing.
Why it matters
The address is part of identifying who issued the invoice. Without the city the address is incomplete and the invoice is rejected.
How to fix it
In your invoicing software, open your company details and check the city field in your address. Enter the city in its own field, separate from the post code, then save and export the invoice again. If the invoice takes the address from a template or an old saved copy, update that too.
The rule as published
Read the rule on the publisher's site
Business terms: BT-37
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 DE-R-003 still fails, and which other rules do.