Hey ! Is there a way to update the Tax ID in a transaction from the workflows ? It seems that {vatregnum} is not available in the list of updatable fields. Thanks !

You need to put the Tax id on the customer and create a transaction For the old transaction I think with Script you can update this field

Thanks for your update. Since the tax id is sometimes created after the first estimate is made, we have blank Tax ID in some transactions. I’ll check with SuiteScripts then ! Best,