Plesk extension ‘X’ not installed on target Plesk, data of this extension will not be migrated

Symptoms

Migration and Transfer manager shows the following warning:

Plesk extension 'X' not installed on target Plesk, data of this extension will not be migrated

Cause

The mentioned extension is not installed on the target server before the migration was started.

Resolution

1. Log in to Plesk on the target server.
2. Go to Extensions > Extension Catalog.
3. Search for the missing extension and install it.