What it means
The base amount of a discount on one invoice line (BT-137), the figure the line discount percentage is worked out from, has more than two digits after the decimal point. Every digit after the point counts, so 56.125 fails and so does 56.100.
Why it matters
The base amount lets the recipient follow how the line discount was calculated. With more than two decimals it cannot be booked as stated, so the file fails validation and is rejected.
How to fix it
On the line with the discount, find the amount the discount percentage is applied to and round it to two decimals. The base amount is optional, so you can also remove it and keep only the discount amount. Check that the exported file holds the rounded figure, not just the screen.
The rule as published
The allowed maximum number of decimals for the Invoice line allowance base amount (BT-137) is 2. Business terms: BT-137
Where this rule applies
| Rule set | Version |
|---|---|
| EN 16931 (UBL) | 1.3.17 |
| EN 16931 (UBL credit note) | 1.3.17 |
| EN 16931 (CII) | 1.3.17 |
| XRechnung 3.0 (UBL) | 3.0.2 |
| XRechnung 3.0 (UBL credit note) | 3.0.2 |
| XRechnung 3.0 (CII) | 3.0.2 |
| Peppol BIS Billing 3.0 (invoice) | 2026.5 |
| Peppol BIS Billing 3.0 (credit note) | 2026.5 |
| Factur-X 1.09 BASIC | 1.0.9-2 |
| Factur-X 1.09 EN 16931 | 1.0.9-2 |
| Factur-X 1.09 EXTENDED | 1.0.9-2 |
| ZUGFeRD 2.5 BASIC | 2.5.2 |
| ZUGFeRD 2.5 EN 16931 | 2.5.2 |
| ZUGFeRD 2.5 EXTENDED | 2.5.2 |
| SI-UBL 2.0 / NLCIUS (invoice) | 2.0.3.13 |
| SI-UBL 2.0 / NLCIUS (credit note) | 2.0.3.13 |
| NLCIUS (CII) | 1.0.3.13 |
| France CTC (UBL invoice) | 1.4.0-04 |
| France CTC (UBL credit note) | 1.4.0-04 |
| France CTC (CII) | 1.4.0-04 |
| CIUS-RO UBL Invoice 1.0.9 | 1.0.9 |
| CIUS-RO UBL Credit Note 1.0.9 | 1.0.9 |
Check your file
Drop your e-invoice to see whether BR-DEC-25 still fails, and which other rules do.
Related rules
- BR-DEC-RO-25 Base amount of a line discount: two decimals at most
- BR-DEC-27 Line charge amount: at most two decimals
- BR-DEC-28 Line charge base amount can have at most two decimals
- BR-DEC-24 Line discount amount: at most two decimals
- BR-DEC-23 Invoice line net amount: at most two decimals
- BR-DEC-20 VAT amount per VAT category: at most two decimals