BR-BE-12
Error Guide
🇧🇪 BR-BE-12: Mercurius endpoint format in Belgium
ErrorMandatoryNeeds Input
B2G invoices to Belgian government must use the correct Mercurius endpoint format. The endpoint ID must be a valid Mercurius identifier.
Quick Facts
Severity
Error (rejection)
Ruleset
Mercurius
Mandate
B2B Mandatory
Fix Type
Needs input
Why This Matters in Belgium
Belgium requires e-invoicing using Peppol BIS Billing 3.0 (UBL). Invoices with this error will be rejected. They cannot be processed for Belgium compliance.
Invoice Navigator covers 89 Peppol BIS 3.0.17 rules for Belgium. Auto-remediates 91% of top rejection errors.
How to Fix BR-BE-12
Belgium E-Invoicing Requirements
Phase
Status
Scope
B2G
Live (Nov 2022)
All federal government suppliers
B2B
Live (Jan 2026)
All Belgian VAT-registered businesses
Common Causes
- •Using wrong scheme ID for Belgian government
- •Endpoint identifier not from Mercurius system
- •Outdated government endpoint
Fix BR-BE-12 automatically
Upload your invoice and let Invoice Navigator auto-remediate this error.