Invalid transaction/service pair

Error Description

Either the Transaction Type field (tran) or the Service Type field (serv) is not a valid value in the LineItem (itms).


  "err": [
      "code": -28,
      "msg": "Invalid transaction/service pair."

How to Resolve

Ensure that the Transaction Type (tran) and Service Type (serv) fields on the LineItem (itms) in your CalcTaxes request are set to valid values.

Use the /api/v2/afc/tspairs endpoint to get a list of valid Transaction/Service pairs.