rdisp/scheduler/test/reschedule_always is a SAP Parameter attribute which is used to control For testing only: reschedule even if not required information. This is available within R/3 SAP systems depending on the version and release level.
Below is the standard documentation available and a few details of the attributes values .
This parameter is only for internal test purposes. The kernel scheduler
is instructed to schedule every request again, even if the priorities of
the requests in the queues do not require it. This only makes sense to
check the correct behavior of the scheduler in certain test cases.
For internal use only - changes possible at any time.
See SAP Parameter Documentation for full SAP documentation for this profile parameter.