Unless your JIRA runs on one of the free licenses, Structure requires a license key to work. You can get a free no-obligation 30-day evaluation license key for your JIRA server in a few seconds.
You can also get evaluation license from Atlassian in the Plugin Manager by clicking a button named Try or Free Trial.
If you have installed a license from ALM Works, Plugin Manager may show that Structure is Unlicensed or Action Required, because it's not aware of ALM Works license. You can check true license status on Administration | Structure | License Details page — if it shows you that the license is OK, you can safely ignore the status of the license in Plugin Manager.
Structure support two kinds of licenses — issued by ALM Works and issued by Atlassian. These licenses are functionally equal — you can use either kind to get the same functionality in Structure. The prices are also the same.
The following table summarizes the differences and provides instructions for both kinds.
License from ALM Works
License from Atlassian
The license key is sent to you by email
Manage with other Atlassian licenses at my.atlassian.com
License key looks like this:
Structure license can be purchased from ALM Works, from Atlassian, or through Atlassian Solution Partners and resellers.
Commercial license from ALM Works can be purchased at http://almworks.com/structure/purchase.html.
To generate a license, JIRA Server ID is required. JIRA Server ID is a 16-digit code, which JIRA Administrator can look up in JIRA menu Administration | System Info or in Administration | Structure | License Details.
You can purchase a license via Atlassian on the Atlassian Marketplace.
After the purchase is completed, the license key will be available on https://my.atlassian.com.
You can purchase through a reseller of your choice. Atlassian Solution Partners can also provide you with additional services and advice.
When you purchase through a reseller, you can get either kind of license (issued by ALM Works or by Atlassian), depending on the reseller's actions. If you prefer one kind of license over another, please don't forget to tell that to the reseller.
You can convert a license of one kind into a license of another kind. Please contact firstname.lastname@example.org for assistance.