There are Pending license keys of class "
Plesk Control Panel 9.x..." in License Manager. I'm trying to install a license key via
Top > Service Director > License Manager > Licenses > %ID% > Issue License
The operation failed and the following error was shown in the problem report:
Key type "Parallels Plesk Panel 9 for Parallels Virtuozzo Containers (Lease)" not found in client's pricelist
License key for Parallels Plesk Panel 9.5 or earlier are no longer be available for purchase as of December 9, 2012. That is why it's not possible to order a license key for Plesk version 9.5 or earlier through PBA-S.
Upgrade Parallels Plesk Panel 9.5 to version 10 or 11 according to Upgrade in PBA-S from Plesk 9 to Plesk 11 (pp) and disable license key class for Plesk 9.x in hosting plans.