The problem is, with the invoice circled in red, this amount has been reduced by 0.44 (rounding difference), yet the report still shows it before reduction, i tried to look for a better criteria than “Credit” but couldn’t find, any suggestions?
Since you showed only credits you missed the debits of the rounding (since is a reduction). The way you are filtering the sales (showing only credit column) invoices is not optimal, ie is prone to many possible errors.
You better start from filtering the transaction correctly:
It worked, the only problem is that the sales invoices value now showing in minus (the correct values though)! any idea how to reverse it to be in the +?
Use Amount x-1. There are several variables where the mathematical conventions of the program produce oppositely signed numbers from what standard reports usually show. So in most cases, there is an option for ZZZZZ x-1.