---
title: "Nack reason enum"
url: "https://help.internetx.com/en/api/core-nack-reason-enum/"
lang: "en"
section: "API reference — API reference (XML/JSON)"
breadcrumb: "API documentation (JSON/XML) > Enums and constants"
updated: "2023-09-26"
---

# Nack reason enum

## Description

Defines the refusal reason in case of a NACK on a transfer out request.

## Possible values

-   1 = Fraud. Evidence of fraud is available.
-   2 = UDRP. A UDRP process is currently underway.
-   3 = Lawsuit. Court order.
-   4 = Identity. Challenging the identity of the transfer contact.
-   5 = Nonpayment. Registrant has not paid registration fees.
-   6 = Protest. Protest against the transfer from the domain holder or administrative domain contact.