can we apply the withholding tax on purchase order like VAT

Summary

we have a requirement to apply the WH rate on purchase order

Content

on purchase order lines we can apply the VAT tax codes but we need a solution or a workaround to apply The withholding on Purchase order , i know that the normal behaviour that we apply the WH tax on AP invoice but also we need to apply it on purchase order.so how we can acheive that?