# View template versions

Type of document: How-to guide
Product: NGINX One Console
> View and manage the version history of a config template on the Versions tab in NGINX One Console.

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## Overview

Use this page to view and manage the version history for a config template in NGINX One Console. The **Versions** tab on the [Template Detail page](template-detail-view.md) lists every version for a template and shows how many submissions reference each version.

A new version is created each time the template content changes. Versions have two states:

- **`draft`** — editable; content can still be updated in place.
- **`final`** — immutable; any further content changes create a new draft version.

## Before you begin

Before you begin, make sure you have:

- **NGINX One Console access**: You need permission to view config templates.
- **An existing template**: At least one template must exist in **Manage > Config Templates**.

## Go to the Versions tab

1. In the NGINX One Console, go to **Manage > Config Templates**.
2. Select a template name from the list.
3. Select the **Versions** tab.

## Versions data grid

The **Versions** tab displays the following columns:

| Column | Description |
|--------|-------------|
| **Version** | The sequential version number. Version 1 is the initial version created at import. Each subsequent content change increments this number. |
| **Modified** | The date and time the version was last modified. |
| **Description** | The description associated with the template version, if the author provided one. |
| **Submissions** | The total number of template submissions that reference this specific version. |

You can sort the list by **Version**, **Modified**, or **Description**. You can also search across all visible columns.

**note:** 
The **Submissions** count reflects the number of submissions referencing a specific version, not the latest version overall. A version with a non-zero submission count cannot be deleted.

## Delete a version

To delete a template version, select **Delete** on the version row and confirm the pop-up window.

**important:** 
The following constraints apply when deleting a template version:

- **The latest version cannot be deleted.** To remove the entire template including the latest version, use [Delete a Template](/nginx-one-console/api/api-reference-guide/#operation/deleteTemplate) instead.
- **A version with associated submissions cannot be deleted.** The **Submissions** column shows the count. Delete the associated submissions before deleting the version.

## Refresh

Select **Refresh** at the top right of the page to reload the version list from the server.

## API reference

The **Versions** tab uses the following API operations:

- [List template versions](/nginx-one-console/api/api-reference-guide/#operation/listTemplateVersions) — retrieves all versions for a template.
- [Delete a template version](/nginx-one-console/api/api-reference-guide/#operation/deleteTemplateVersion) — deletes a specific version by its `templateVersionObjectID`. Returns `409 Conflict` if the version has associated submissions.

## Troubleshooting

### Version can't be deleted

**Symptom**: The **Delete** action is unavailable or returns an error.

**Cause**: The version has associated submissions, or it's the latest version.

**Fix**: Check the **Submissions** column count. Delete any associated submissions before deleting the version. To remove the entire template including the latest version, use the [Delete a Template](/nginx-one-console/api/api-reference-guide/#operation/deleteTemplate) API operation.

## References

For more information, see:

- [View template details](template-detail-view.md)
- [Author templates](author-templates.md)
- [Submit templates](submit-templates.md)