Kuwait retention tax on payable invoice.

In Kuwait, there is need to retain 5% of the invoice amount as retention tax if supplier (both within and without Kuwait), doesn't produce certificate or letters from tax authority. Upon furnishing the certificate/letter, the amount is paid back to supplier. When we configure withholding tax, it deducts the amount and creates invoice in name of tax authority but when we get the certificate/letter, we need to pay the supplier and not tax authority for the deducted amount. How to handle this situation? Should we create a credit memo on tax authority followed by a standard invoice on normal supplier