Hi everyone, I am facing some issues drawing out the correct VAT percentage and product posting group automatically from the item card.
Below is my VAT posting setup with the combination from my vendor vat business posting group (Domestic) and item vat product posting group (GST 7)

However, when I create a purchase order, the VAT product posting group is derived based on the "GST prod. posting group" field on the Purchases & Payables Setup. I want it to reflect based on the vendor and item.

If I delete the field in the "GST prod. posting group" field on the Purchases & Payables Setup, I will get an error.
How do I resolve this so that the system will not draw the prod posting group from the purchases & payables setup?
Thank you very much.
ZJ