Prerequisites
You can fix time periods on the planning tables. You cannot then change the planning in these time periods:
This also holds for operations that are only partly in a fixed time period.
During dispatching the system checks the operation and sub-operation dates and dispatches an operation with all the sub-operations either before or after the fixed time period.
You can reverse the fixing of the time period and then carry out planning as usual.
Planning periods can be fixed automatically when generating the capacity planning table using the user exit CY040001 as well as online.
Procedure
The dialog box Fix time period appears.
If you want to delete an entry select it and choose Delete. You can then carry out planning in this time period again.
Result
The time intervals are locked for planning. The locked periods are highlighted on the capacity planning table. The locked periods are not marked on the capacity planning table (tabular form).