Changes to Finish a business sign-in

added the optional property error/authorization to the response with the 400 status

added the optional property error/authorization to the response with the 401 status

added the optional property error/authorization to the response with the 403 status

added the optional property error/authorization to the response with the 409 status

added the optional property error/authorization to the response with the 429 status

added the optional property error/authorization to the response with the 500 status

added the optional property error/authorization to the response with the 503 status

endpoint added