> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.formester.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Auto unique ID

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The [**Auto Unique ID field**](https://formester.com/features/auto-unique-id/) automatically assigns a **unique identifier** to each form submission. This makes it easier to **track, filter, and identify responses**, especially in large datasets or order forms.

# Adding the Auto Unique ID Field
* Open your form in the **Formester editor**.
* Click **Add Elements.**
* Scroll to **Others** and select **Auto Unique ID.**
* The field will appear on your form.

### Configuring Auto Unique ID Properties
* Click on the **Auto Unique ID field** to open the **Properties panel**.
* **Field Label**: Change the label to something descriptive, like *“Order ID”*, *“Ticket Number”*, or *“Submission ID.”*
* **Prefix**: Add a prefix to the ID (for example, `ORD-` or `APP-`) to help identify the type of submission.
* **Number of Digits**: Set how many digits the ID should have. Example: `5` digits will generate `00001, 00002, 00003…`.
* **Starting Index**: Define the starting number of the ID sequence. Example: start at `1000` to generate `1000, 1001, 1002…`.

### Use Cases
* [**Order Forms**](https://formester.com/templates/categories/order-forms/): Assign unique order numbers for tracking and fulfillment.
* **Event Registrations**: Generate unique ticket IDs for attendees.
* **Quizzes and Assessments**: Mark submissions with unique IDs for easier scoring or referencing.
* **Survey Responses**: Filter or search responses by their unique identifier.

### Publishing and Testing
* Click **Publish** once the field is configured.
* Preview the form and submit a test response to confirm the Auto Unique ID is generated correctly.
* Check the responses dashboard to see the sequential ID with prefix and formatting applied.