> For the complete documentation index, see [llms.txt](https://support.docstudio.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.docstudio.com/user/template-builder/template-dynamic-fields/autonumber-field.md).

# Autonumber Field

This document explains how to add and configure the Autonumber field in a template, including prefixes and counter behavior.

Use **Autonumber field** to insert an automatically generated counter value.

The counter increments for envelopes created from the same template.

You can place this field in:

* structured documents
* PDF documents

### Add an autonumber field

{% columns %}
{% column %}

1. Open the template in edit mode.
2. In the **Fields** panel find the **Autonumber field** and add it to the template.
3. Configure the field and click **Save**.
   {% endcolumn %}

{% column %}

<figure><img src="https://2962383972-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FoqUiFHjwtCCGSaEDqbXb%2Fuploads%2Fan0l4JGKb4OKfZ3tFem2%2Fimage.png?alt=media&amp;token=b164c08a-e348-4e17-8e69-c416c3d80fc9" alt=""><figcaption></figcaption></figure>
{% endcolumn %}
{% endcolumns %}

### Field settings

Click on the placed field to reopen settings menu.

{% columns %}
{% column %}

* **Name** — field name shown in the document
* **Tooltip** — additional hint shown on hover
* **Prefix** — text added before the number
* **Search** — makes the field available for search/filtering in the mailbox UI (if enabled in your setup)
  {% endcolumn %}

{% column %}

<figure><img src="https://2962383972-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FoqUiFHjwtCCGSaEDqbXb%2Fuploads%2FFs2bdWcqlgHMYEbixsIE%2Fimage.png?alt=media&amp;token=238b1e17-8846-430d-b686-e41166187378" alt=""><figcaption></figcaption></figure>
{% endcolumn %}
{% endcolumns %}