What happened when you tried?

https://www.sagecity.com/us/sage300_erp/f/sage-300-databases-and-operating-systems/182196/vendor-with-two-or-more-tax-group/462962#462962

https://www.sagecity.com/us/sage300_erp/f/sage-300-databases-and-operating-systems/181464/vendor-with-2-taxe-codes/461393#461393

Thank you for finding the previous answers!

Those were different questions.  The answer to today's HC2019 question is "Yes".

it was still part of those groups of questions.  but then the question says "if yes, then how" so "yes" is only half of the answer, but then again, the answers are still in the original posts

Based on the previous answers provided, we would need to delete the PO lines and change the taxes. I think that is the only way to do it once the PO is entered. We are using two ERP that is why we got confused. Once ERP allows us to change the taxes on PO, but not Sage300. Thanks!

Yes you need to delete all the lines first.

Thanks!