The insertion of the exemption codes (e.g. 7-8-12 ..) in the Unique Certification report is completely manual.
When an invoice contains a non-subject amount that needs to be split between two exemption codes (e.g 12-8), I have to manually create multiple lines in the Unique Certification. When there are many invoices this activity is not sustainable.
The idea of ​​improvement would be to automate the creation of the lines on the basis of the exemption codes when the invoice is settled (settlement function on vendor payment journal).
The system should inherit the codes on the posted withholding tax table and create separate lines for each code when I generate the Unique certification.