You are getting an error message when sending an API call from SalesForce, and asked us for an audit of the calls. The error message shown is ModelStateInvalid .
AvaTax and SalesForce CPQ connector
- You will need to be a SalesForce Administrator to correct this.
- Go to your Company setup Owner configuration, and ensure that the company Country is a standard 2-character abbreviation.
- If it is not, change it to the proper 2-letter abbreviation, save changes, and re-test your GetTax call.