BR-DEX-03:Eine Sub Invoice Line (BG-DEX-01) muss genau eine "SUB INVOICE LINE VAT...
Missing sub-line VAT info. Each Sub Invoice Line (BG-DEX-01) must contain exactly one VAT information group (BG-DEX-06).
Engine Classification
Validate and normalize XRechnung UBL extension structure
Confidence: 75% · Applied automatically in pipeline
What is BR-DEX-03?
BR-DEX-03 is a fatal validation rule defined in the XRechnung (Germany) specification (DEU national rules). It validates the ext:UBLExtensions element in the UBL invoice XML.
When this rule fires, the invoice is non-compliant and will be rejected by Peppol access points and national validation services. The sending system receives a rejection response and the invoice does not reach the buyer.
Target path: //ext:UBLExtensions
Why This Error Matters
Invoice will be rejected. XRechnung extension rules for German invoices must be followed for proper processing by German public sector recipients.
BR-DEX-03 is a hard failure. Invoices that trigger this rule are rejected at the access point and never reach the recipient. In Peppol networks, this means your sending system receives an MLR (Message Level Response) with a rejection status. The invoice must be corrected and re-sent, adding delay to your payment cycle.
Invoice Navigator can automatically correct this error in your pipeline. The fix is applied with full audit evidence, so your compliance trail remains intact.
Validator Behavior
- ·Causes invoice rejection
- ·Rejected by XRechnung endpoints
- ·Error returned: BR-DEX-03
- ·Specification: XRechnung (Germany)
Before / After
<Invoice> <!-- Issue: Each Sub Invoice Line (BG-DEX-01) must contain exactly one V --> </Invoice>
<Invoice> <!-- Issue resolved per XRechnung (Germany) --> </Invoice>
Technical Reference
//ext:UBLExtensionsCommon Causes
- ·Sub invoice line missing VAT information group
- ·BG-DEX-01 present without BG-DEX-06 tax category
- ·XRechnung extension sub-line has no tax classification
- ·Nested line item missing required tax information
- ·Export template missing sub-line VAT section
Seeing this in production? The API handles BR-DEX-03 automatically. See the fix response →
Related Errors
Last updated: 27 February 2026
Handle BR-DEX-03 Automatically in Your Pipeline
The compliance engine auto-remediates this error with controlled safety policies and evidence pack generation.