You maintain the control key for operations in Customizing for Shop Floor Control, by choosing Master Data ® Routing Data ® Define Control Key.

Using the Schedule indicator you can define that an operation is scheduled. If an operation is

• Scheduled, the system calculates the duration of the operation segments and the dates

• Not scheduled, the system assumes that all the operation segments have a duration of 0

If an operation is externally processed (relevant setting in the External processing key), you can define how it is scheduled. If the Sched. external op. indicator is

• Not set, the system schedules the operation using the number of delivery days maintained on the external processing screen of the operation
• Set, the system calculates the duration of the operation segments from the standard values

You use the Det. Cap. Reqmnts indicator to determine whether capacity requirements are determined for an operation.