---
title: "Define the Gateway User ID"
slug: "authorizenet-define-gateway-user-id"
updated: 2023-10-06T15:07:16Z
published: 2023-10-06T15:07:16Z
canonical: "docs.blackthorn.io/authorizenet-define-gateway-user-id"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.blackthorn.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Define the Gateway User ID

Now that you are connected to your Payment Gateway, you need to manually copy the “API Login ID” from your Authorize.net account and paste it into the Payment Gateway **Gateway User ID** field.

1. Log into your Authorize.net account.
2. Click **Account** and then **API Credentials and Keys**.![H_02_01_define gateway user id 1](https://cdn.document360.io/f977eec0-500f-40a3-b663-724a51f78075/Images/Documentation/H_02_01_define%20gateway%20user%20id%201.png)
3. Copy the “API Login ID”.![H_02_01_define gateway user id 2](https://cdn.document360.io/f977eec0-500f-40a3-b663-724a51f78075/Images/Documentation/H_02_01_define%20gateway%20user%20id%202.png)
4. Enter the “API Login ID” in the **Gateway User ID** field.![H_02_01_define gateway user id 3](https://cdn.document360.io/f977eec0-500f-40a3-b663-724a51f78075/Images/Documentation/H_02_01_define%20gateway%20user%20id%203.png)
5. Click **Save**.