The licensing model in Parallels Plesk Automation 11.5 is described in this article: Parallels Plesk Automation licensing.
Parallels Plesk Automation (PPA) requires the following licenses to be installed on the Management Node and Service Nodes:
Main PPA license - This license limits the number of accounts, domains, and Web Presence Builder websites, and also limits the ability to use Customer & Business Manager. The license starts with "PPA" and has this format: PPA.12345678.1234. It should be installed on the Management Node only.
- Parallels Plesk Panel license - This license limits the operations on the Service Nodes. The license starts with "PLSK" and has this format: PLSK.12345678.1234. In terms of PPA, it is an additional license.
Note: PPA only accepts Lease Parallels Plesk Panel Unlimited keys for dedicated servers.
Operations with licenses are performed in License Manager:
PPA Administration Panel > License & Security > License Manager
- Switch to the Main License tab to manage the main PPA license.
- Switch to the Additional Licenses tab to manage Service Node licenses.
Separate additional Parallels Plesk Panel licenses should be installed on:
- PPA Management Node
- All Service Nodes added in PPA that act as:
- Apache Web Server Node
- IIS Web Server Node
- Postfix Mail Server Node
Note: DNS or Database Service Nodes do not require an Additional License to be installed, except in cases where this server has additional services from the list above.
To find the PPA license number, check this article:
#114980 How can I find Parallels Plesk Automation license key number?