Why does tax not change in Netsuite after switching to a non-AvaTax tax item?

Overview

A document in Netsuite had originally used AvaTax, but after switching the tax item to something different the tax amount wouldn't change.

Environment

Netsuite

Resolution

• After AvaTax has been used, additional changes to the tax amount are not allowed.
• This was programmed in due to data possibly being on both the AvaTax and Netsuite side.
  • This way the data will be the same. 
• If a major change is needed, the existing document should be deleted in Netsuite, and a new document should be created.