"code": "AccountExists",
	"target": "Unknown",
	"details": [
			"code": "AccountExists",
			"number": 601,
			"message": "An account with this email already exists.",
			"description": "Unable to create a new account for email address '-0-'.  That email address is already associated with an existing account.",
			"faultCode": "Client",
			"helpLink": "",
			"severity": "Error"

This indicates that you tried to use a Registrar or Onboarding API to create an account, but the account already exists.

In AvaTax, a user is uniquely identified by their email address. The same email address cannot belong to two separate accounts.

Next steps:

  • This user may have created a free trial account in the past.
  • The user may have mistyped an email address.
  • If the user is incorrectly attached to a different account, they should request their account be updated through support.