Cleaning of drive is failing with 98 error

Hi,

Need support as  LTO4 tape drives cleaning is failing with 98 error (error requesting media (tpreq)(98)). Inserted new cleaning media and tested on all drives but still same error on all tape drives.

Master Server : Solaris 10 netbackup 7.1.0.3

Media server : windows 2003 Netbackup 7.1.0.3

Tape drive Type: LTO4, HP.