Cost Center field in IW28/ IW29 selection screen

Hi,

I would like to know which cost center value is considered in the "Cost Center" field in IW28/ IW29 list report selection screen. This field comes under strip- "Location data / Acc. Assignment / maint. Plan" in selection screen. I thought it might be Cost center of an Equipment which is assigned to a PM Notification, I tried even that way and am not getting any output for that search. Do we maintain "cost center" in PM Notification.

Field name is KOSTL (VIQMEL / QMFE). I am attaching screenshot here.

Thanks

Vineeth