---
title: "User Signup"
url: https://docs.catalyst.zoho.com/en/sdk/ios/v2/cloud-scale/authentication/user-signup/
description: "Adding new users to your catalyst application."
last_updated: 2023-09-02T19:36:41Z
service: Cloud Scale
type: general
related_links:
  - name: "Authentication"
    url: /en/cloud-scale/help/authentication/introduction
  - name: "Users"
    url: /en/cloud-scale/help/authentication/user-management/users/introduction/
  - name: "Authentication - API"
    url: /en/api/code-reference/cloud-scale/authentication/add-new-user/#AddNewUser
---

# User Signup

You can add a new [user](https://docs.catalyst.zoho.com/en/cloud-scale/help/authentication/user-management/users/introduction/) to your Catalyst app by calling the `signUp()` method. You must pass the [user instance defined here](https://docs.catalyst.zoho.com/en/sdk/ios/v2/cloud-scale/authentication/create-user-instance) as the argument to the `signUp()` method.

The code syntax for user signup is given below:

```bash
ZCatalystApp.shared.signUp(user: ZCatalystUser, completion: @escaping (Result<( ZCatalystUser, Int64 ), ZCatalystError >) -> Void)
```

**Parameters**:
* `user`: The user instance created before this operation
* `completion`: If the call executes successfully, the completion block returns the user object with an `UserID`, `ZUID`, `Org ID`, etc assigned for the user. Else, it returns an error.

A sample code snippet is shown below:

```bash
let userobj = ZCatalystApp.shared.newUser( lastName : "McRogan", email : "timothy.mcrogan@zylker.com") //Replace this with the last name and email address of the user
ZCatalystApp.shared.signUp(user: userobj) { ( result ) in
switch result{
   case .success ( let result ) :
    print("The user \(result.0.firstName) in org \(result.1) has been successfully signed up.")
   case .error( let error ) :
    print( "Error occurred >>> \( error )" )
  }
}

```