Locking Allocation Segments in an Allocation
Cycle
You can lock individual allocation segments in an allocation cycle. Any locked allocation segments are not processed in the allocation cycle.

It is useful to lock an allocation segment if, for example, the data in your segment has changed and you want to repeat a periodic allocation for this segment only. By locking the other allocation segments in the allocation cycle, processing time is reduced.
To lock individual allocation segments of a cycle when creating or changing a cycle or a tracing factor, set the lock indicator.