Scenario:
When the user updates the classifications only for the bill transactions of status paid in full, some of the bills change to open state.
Reason:
Actually, the GST/HST value of the bill was irrespective of the bill amount, which was manually entered by the bill creator. But the user only updated the department, Profit center, and Brand of the transaction line items. The system calculated the correct total tax amount based on the tax rate of the transaction line items and overwrite it with the GST/HST value that the user had previously entered. This is the standard behavior of NetSuite.
Solution:
Find the transactions and manually recorrect the tax value for each one. We can identify the tax value from the system information. As a result, we should be aware of the possibility of such scenarios occurring.
Related topic –Bill payment is not editable because of ACH