Hello,

As soon as I checked the "pro forma" option in "configuration>sales>pro forma invoice" I got a pop-up message in all my old invoices (the new ones don't have this problem).

I tried to look for "sales condition" everywhere but I couldn't find it.

Here is a picture of the error message : https://ibb.co/yhhktp5

Do you know how to solve this problem please? Thank you very much.