# Limit to one submit per user

You can restrict users to a single submission based on their email address or phone number.

### ⚙️ Step to enable

1\. Open the app > click **Forms** > open a form

2\. Click setting icon on the left side > click **General**

3\. Tick on checkbox **Limit to one submit per user** > select option to identify the customers: **email** or **phone**

4\. Click **Save**

<figure><img src="https://3488889492-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FEGgRVSDpMlcGFz1igK0s%2Fuploads%2FlpflVgJP2eLqELD1ZYAk%2F2025-10-03_15-36-44.png?alt=media&#x26;token=0528cc03-52cd-4f69-a6dc-409a192dc521" alt=""><figcaption></figcaption></figure>

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### ✅ How It Works

Once **Limit to one submit per user** is enabled, the app checks for duplicate entries based on the **email address** or **phone number** entered in the form.

**🚫 When a user tries to submit again**

If someone attempts to submit the form more than once using the same email or phone number, the form will block the submission and show an error message such as:

> **“Data already exists”**

This message informs the user that they have already submitted the form.

<figure><img src="https://3488889492-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FEGgRVSDpMlcGFz1igK0s%2Fuploads%2FoGlX14bvhzUpgWcep8MV%2Fimage.png?alt=media&#x26;token=e985f4c2-fb09-4cf7-811b-f4863d47ca7a" alt=""><figcaption></figcaption></figure>

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### 🔧 Use Cases&#x20;

When we should enable this option?

* Contests or giveaways:  limit to one entry per user
* Exclusive offers or coupons: avoid duplicate uses
* Customer feedback or surveys: ensure one response per customer
* Membership applications: one submission per applicant

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#### Need More Help?

If you still need assistance, please contact us at [**support@powerfulform.com**](mailto:support@powerfulform.com). Our team will be happy to help you resolve any issues or guide you further[<br>](https://da76v9kevdkud.cloudfront.net/wp-content/uploads/2024/09/2024-09-13_17-10-22.png)