BR-CO-26 error
What this rule checks
Explanation
For the buyer's software to automatically recognize who the seller is (e.g. for accounting or payment matching), at least one seller identifier must be present: a general Seller identifier (BT-29, e.g. a GLN or Peppol ID), the Seller's legal registration identifier (BT-30, in France this is the SIREN/SIRET), or the Seller VAT identifier (BT-31). The invoice currently has none of the three.
How to fix it
Add at least one seller identifier — for a French business, the simplest is usually the SIREN or SIRET in the Seller legal registration identifier field, or the VAT number (numéro de TVA intracommunautaire) in the Seller VAT identifier field. Either one on its own satisfies this rule.
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