Resize VG Space under logical disk on F5 LTM.

I get the following error : Provisioning: Over allocation of disk has been detected. Please check for unused application volumes. I know knowledge article K15919 tells me to increase space but what are the proper steps to take from reserved and add to free?

 

This is the command : modify /sys disk logical-disk HD1 vg-reserved 10000 What do I make the size to allow me to upgrade and not run out of reserved or free space?

 

sys disk logical-disk HD1 { mode mixed size 381554 vg-free 24524 vg-in-use 357024 vg-reserved 30720