BR-FR-08_BT-23

Explanation

French e-invoices state their billing framework (cadre de facturation) in the business process field. Only B1, S1, M1, B2, S2, M2, S3, B4, S4, M4, S5, S6, B7, S7, B8, S8, M8, B9, S9 and M9 are allowed; the letter stands for goods (B), services (S) or mixed supplies (M), the digit for the kind of transaction, e.g. 1 for a regular invoice. Here the value is missing or isn't one of these codes. The requirement comes from the French e-invoicing rules, not from EN 16931.

How to fix

Ask the seller for a corrected invoice with a valid billing framework. For an ordinary invoice for goods this is B1, for services S1, for both M1.