Plesk functionality can be increased by using additional features (add-ons) like Acronis True Image, Sophos Anti-Virus for Servers, and so on. These add-ons require an additional license keys that can be ordered at any time. To install add-ons license keys:

1. Buy desired add-ons at the Plesk online store.
2. Wait for the confirmation e-mail. Once your order is processed, you will receive e-mail saying that add-on keys are linked to your license key.
3. Install the add-on keys with the license-retrieve-keys operation. You have no need to explicitly specify them, as the operation automatically installs all additional keys linked to your Plesk license key.

Request Packet

The license-retrieve-keys operation is used for the additional keys installation.

A request XML packet (server_input.xsd) installing additional keys:

<packet>
    <server>
        <license-retrieve-keys/>
    </server>
</packet>

Response Packet Structure

The license-retrieve-keys node of the output XML packet is of complex type (server_output.xsd) which has the following presentation:

• result, required. It wraps the result of the license-retrieve-keys operation. Data type: resultType (common.xsd).
• status, required. It returns the execution status of the operation. Data type: string. Allowed values: ok | error.
• errcode, required if the operation fails. It returns error code. Data type: unsignedInt.
• errtext, required if the operation fails. Returns error message. Data type: string.

Samples

A request XML packet (server_input.xsd) installing additional keys:

<packet>
    <server>
        <license-retrieve-keys/>
    </server>
</packet>

Response:

<packet>
    <server>
        <license-retrieve-keys>
            <result>
                <status>ok</status>
            </result>
        </license-retrieve-keys>
    </server>
</packet>