How do I assign supplier credit notes to a 74 account?

Hello,

from some suppliers I receive credit notes for commissions. In Belgium, those need to be encoded in a 74 account («autres produits d’exploitation»).

But I can’t select a 74 account in a supplier invoice…

how do I manage those ?

Thanks

I think this is not supplier credit note but a self-billing invoice so you should encode as a customer invoice in Tryton.