> ## Documentation Index
> Fetch the complete documentation index at: https://learn.nextedy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# License Types and Evaluation Periods

> Nextedy GANTT requires a valid license to operate. This page documents the license types, evaluation periods, and the behavior of the Gantt chart under different license states.

export const LastReviewed = ({date}) => {
  if (!date) return null;
  const formatted = new Date(`${date}T00:00:00Z`).toLocaleDateString("en-US", {
    year: "numeric",
    month: "long",
    day: "numeric",
    timeZone: "UTC"
  });
  return <p className="mt-10 text-sm text-gray-400 dark:text-zinc-500 not-prose">
      Last reviewed on {formatted}
    </p>;
};

## License Types

| License Type           | Duration                      | Description                                                       |
| ---------------------- | ----------------------------- | ----------------------------------------------------------------- |
| Evaluation (Primary)   | 30 days from installation     | Full-featured evaluation for determining product fit              |
| Evaluation (Secondary) | 10 days from qualified update | Extended evaluation after a qualified software update             |
| Standard               | Per agreement                 | Full license for production use, obtained via License Certificate |

## Evaluation Period Rules

### Primary Evaluation Period

| Property            | Value                                                               |
| ------------------- | ------------------------------------------------------------------- |
| Duration            | 30 days from date of installation                                   |
| Functionality       | Full product capabilities                                           |
| Purpose             | Internal evaluation to determine if the software meets requirements |
| Expiration behavior | Software is automatically disabled                                  |

### Secondary Evaluation Period

| Property | Value                                          |
| -------- | ---------------------------------------------- |
| Duration | 10 days from date of qualified software update |
| Trigger  | Qualified update of the software               |
| Purpose  | Re-evaluation after a significant update       |

<Warning>
  Upon expiration of the evaluation period, the Gantt software is automatically disabled. You must obtain a License Certificate for perpetual use or cease using the software. Attempting to disable or remove the automatic disabling feature violates the license agreement.
</Warning>

## License State Indicators

The Gantt displays a license panel with status information based on the current license state:

| License State | Panel Variant | Behavior                                                                         |
| ------------- | ------------- | -------------------------------------------------------------------------------- |
| Valid         | `ok`          | License panel is hidden; Gantt operates normally                                 |
| Warning       | `warning`     | License panel appears with a warning message (approaching expiry)                |
| Expired       | `expired`     | License panel appears with expiration message; Gantt functionality is restricted |
| Invalid       | Error         | Inline warning banner appears with contact information                           |

<Frame>
  <img src="https://mintcdn.com/none-17b4493f/Jklvz9qm2AdmIvBG/gantt/diagrams/reference/license-types/diagram-1.svg?fit=max&auto=format&n=Jklvz9qm2AdmIvBG&q=85&s=8819d6a7456d2c241c5ef0ee2e5f322b" alt="diagram" style={{ maxWidth: "480px", width: "100%" }} width="480" height="180" data-path="gantt/diagrams/reference/license-types/diagram-1.svg" />
</Frame>

## Maintenance Expiration

Separate from license validity, the Gantt tracks maintenance status:

| State               | Description                                                                                                  |
| ------------------- | ------------------------------------------------------------------------------------------------------------ |
| Maintenance active  | Software updates and support are available                                                                   |
| Maintenance expired | Software continues to work but updates are not available; a maintenance renewal is required for new versions |

<Note>
  An expired maintenance period does not disable the Gantt. The software continues to operate, but you cannot install newer versions without renewing maintenance.
</Note>

## License Check Endpoint

The Gantt checks license status at startup by calling a server API endpoint:

| Property | Value                                                               |
| -------- | ------------------------------------------------------------------- |
| Endpoint | `GET /polarion/gantt/admin/api/license`                             |
| Timing   | Called once at Gantt startup                                        |
| Response | Returns license validity, expiry date, and a human-readable message |

## Multi-Node Deployment

Licenses can be used across multiple Polarion cluster nodes:

| Scenario                 | Supported                      |
| ------------------------ | ------------------------------ |
| Single server deployment | Yes                            |
| Multi-node cluster       | Yes, same license on all nodes |

## Extended Evaluation

If you need more than 30 days for evaluation, contact Nextedy to request an extended time-limited license.

## Configuration Example

Check the license status from the admin page:

```text theme={null}
https://your-polarion.example.com/polarion/#/administration/gantt/setup
```

The license panel appears at the top of the Gantt widget when the license is approaching expiry or has expired. If you see the license panel, contact your administrator or visit the Nextedy support portal.

## Related Pages

* [Licensing and User Access](/gantt/getting-started/licensing) -- license setup tutorial
* [Install Gantt](/gantt/getting-started/installation) -- initial installation
* [Polarion Version Compatibility Matrix](/gantt/reference/compatibility-matrix) -- version compatibility reference
* [Error Messages and Diagnostics](/gantt/reference/error-messages) -- license-related error messages

<LastReviewed date="2026-07-07" />