Changes to Stop the repeat behind a received message

removed the invalid_signup_code enum value from the error/code response property for the response status 400

removed the invalid_signup_code enum value from the error/code response property for the response status 401

removed the invalid_signup_code enum value from the error/code response property for the response status 403

removed the invalid_signup_code enum value from the error/code response property for the response status 404

removed the invalid_signup_code enum value from the error/code response property for the response status 422

endpoint added