Avalara > Transaction record > Error: Transaction subsidiary XXX is not valid for item AVATAX. Please choose a different item.

Scenario

A transaction is being created/edited. Upon clicking Save, the user received an Unexpected Error.

Solution

Upon checking the error log, the transaction subsidiary is not included on Avatax tax code.

1. We navigated to Setup > Accounting > Tax Codes.
2. Search and edit Avatax.
3. Add the transaction subsidiary under Subsidiaries.
4. Click Save.