---
title: "Add User to Existing Org"
url: https://docs.catalyst.zoho.com/en/sdk/java/v1/cloud-scale/authentication/add-new-user-to-existing-org/
description: "This page describes the method to add new end-users to your Java application using Catalyst Authentication with sample code snippets."
last_updated: 2025-11-19T15:07:41Z
service: Cloud Scale
type: general
related_links:
  - name: "Add New User to Existing Org - API"
    url: /en/api/code-reference/cloud-scale/authentication/add-user-to-existing-org/#AddaNewUsertoanExistingOrganization
  - name: "Authentication"
    url: /en/cloud-scale/help/authentication/introduction
---

# Add a New User to an Existing Organization

The code snippet given below allows registering a [user](https://docs.catalyst.zoho.com/en/cloud-scale/help/authentication/user-management/users/introduction/) to an existing orginization without creating a new organization.

> **Note: **

* `FirstName`, `EmailId` and `OrgID`are mandatory attributes.

* When inviting a new user, you can configure the sender's email address, subject and the email message. You must add the email address in the [Catalyst Mail Component](https://docs.catalyst.zoho.com/en/cloud-scale/help/mail/email-configuration/)
and get it verified before using it in the SDK code.

#### Sample Code Snippet

**Package Imports**

```java
import com.zc.component.users.PlatformType; 
import com.zc.component.users.ZCSignUpData;
import com.zc.component.users.ZCUser;
import com.zc.component.ZCMailTemplateDetails;

```

```java
//Get an instance of ZCSignUpData
ZCSignUpData signUpdetails = ZCSignUpData.getInstance();
//Pass the necessary data for the sign-up using the instance
ZCMailTemplateDetails mailData= signUpdetails.mailTemplateInstance();
mailData.setSendersMail("docofoh552@lukaat.com");
mailData.setSubject("Welcome to %APP_NAME%");
mailData.setMessage("<p>Hello ,</p> <p>Follow this link to join in %APP_NAME% .</p> <p><a href='\%LINK%\'>%LINK%</a></p> <p>If you didn’t ask to join the application, you can ignore this email.</p> <p>Thanks,</p> <p>Your %APP_NAME% team</p>");
signUpdetails.setTemplateDetails(mailData);
signUpdetails.setPlatformType(PlatformType.WEB);
signUpdetails.userDetail.setEmailId("amelia.burrows@zylker.com");
signUpdetails.userDetail.setLastName("Amelia");
signUpdetails.userDetail.setOrgId("35712181"); 
//Pass user's OrgID here
//Register the user using signUpdetails
signUpdetails = ZCUser.getInstance().addUser(signUpdetails);

```