Check Customer confirms a Customer in AvaTax Exemption Certificate Management.
If you edit a Customer and BigBusiness has not saved its AvaTax ID yet, it confirms. BigBusiness looks up by Customer Code to see if there is a customer in AvaTax ECM.
If the customer is in AvaTax ECM, BigBusiness saves the AvaTax ID for reference. If the customer is not in AvaTax ECM, BigBusiness will Create Customer automatically.