What it means
A VAT breakdown entry (BG-23) with category AE (reverse charge) must carry a VAT exemption reason code (BT-121) or a VAT exemption reason text (BT-120) saying reverse charge.
Why it matters
EU VAT law requires an invoice without VAT to say why. The buyer and the tax authority rely on that statement to know the buyer must account for the VAT. Without it the invoice is rejected.
How to fix it
In your invoicing software, open the VAT setting for this category and fill in the exemption reason. Use the code VATEX-EU-AE and the text "Reverse charge". Most programs then print it on every invoice that uses the category.
The rule as published
A VAT breakdown (BG-23) with VAT Category code (BT-118) "Reverse charge" shall have a VAT exemption reason code (BT-121), meaning "Reverse charge" or the VAT exemption reason text (BT-120) "Reverse charge" (or the equivalent standard text in another language). Business terms: BG-23, BT-118, BT-120, BT-121
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 WL | 1.0.9-2 |
| 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 WL | 2.5.2 |
| 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-AE-10 still fails, and which other rules do.
Related rules
- BR-AF-10 An IGIC VAT breakdown must not have an exemption reason
- BR-AG-10 An IPSI VAT breakdown must not have an exemption reason
- BR-E-10 Exempt VAT needs an exemption reason
- BR-FXEXT-AE-08B Reverse-charge taxable amount must add up from the lines
- BR-FXEXT-AE-08REV Reverse-charge amounts should match per exemption reason
- BR-FXEXT-AF-08B Canary Islands taxable amount must add up from the lines