BR-FR-CDV-09_MDT-77
Validation message
Explanation
The document type code (MDT-77) is mandatory and must be '23' or '305'.
How to fix
Correct the document type code. (Typically a software-side issue, not user input — raise this with your invoicing software vendor; if you're receiving the invoice, ask the sender to address it with theirs.)
Applies to
- Factur-X / FR (CDAR)