BR-CO-09: A VAT number without a country prefix
This code shows up when an electronic invoice is validated. Here is what it means, why it fires, and what to change in the file.
Why this code appears
A VAT identifier does not start with its two-letter country code. The recipient's portal does not know which register to check it against, and rejects.
How to fix it
Prefix the number with the country code: FR40123456824, not 40123456824. The prefix is part of the number, not a display decoration.
Where it happens
This code comes from EN 16931, the European e-invoicing standard. It concerns business term BT-31.