In KP26, the activity types are defined...
In the overview screen, THere is a field "PLAN ACTIVITY"
For some activity types it is maintained as 0.500..
F1 help says...
Total of the plan activity quantities per cost center and activity type in activity type planning.
Field group for planning output per activity type of a cost center.
The product of the plan/actual quantity times the valid plan activity price equals the credit on the cost center per activity type.
If you change or create the activity quantity in planning, you must define the corresponding field in the planning layout.
If the field in the planning layout is not defined, plan activity is displayed only.
This field group can be posted in planning (plan activity) and actual (activity quantity).
BUT please explain me in a simple language.I am not understanding the F1 help