VAT % must be set to 0

Hi guys,

Getting a very frustrating error. Here is the scenario.. trying to create a purchase order but whenever I key in an item, I get this error "VAT % must be 0 for Business VAT group SR and Product VAT group SR.

I checked through my VAT Setup and I want the VAT to be 7% when the vat business group is SR and the product vat group is SR.

The strange part is in my previous setup.. everything worked fine. I simply don't understand what changed.

Any suggestions