Are you using the autocomplete feature in the formula editing dialog to add the field names? I’m asking because the field containing the formula has spaces around the slashes—“Total Charges / m2 / an HT”—but the fields in your formula do not. Field references must be an exact match for the field name, including capitalization, spaces, etc.
I’m not sure, name of the field with the spaces around the slashes is not included in the formula. But I changed it before including the IF(…,) in the formula, maybe that’s why ?
I followed your suggestion, and used the autocomplete feature -instead of copy-paste- and it works fine now ! :ok_hand: Solved.
Cheers from Nice, France !