Defining Lead Time Horizons
In addition to the lead time components, you must define a horizon, which indicates a time period. In the period before the start date of the horizon, short-term, detailed planning of lead times is applied, using several lead time components on the basis of routing data.
After the start date of the lead-time horizon, long-term planning is applied. In long-term planning, only a reduced number of lead-time components is used to calculate lead times. Due to the limited number of lead-time components, the performance of the planning run is optimized.
| Lead time horizon | Package | Unit | Defined in |
|---|---|---|---|
| Lead Time Horizon (Days) | Procurement | days | Items - Purchase Business Partner (tdipu0110m000) |
| Operations Horizon | Enterprise Planning | days | Items - Planning (cprpd1100m000) |
For planned production orders, the Start of Fixed Lead-Time Horizon (JSC) field in the Items - Planning (cprpd1100m000) session determines when short-term planning ends and long-term, fixed planning begins.
For planned purchase orders, the Lead Time Horizon (Days) field determines the periods for short-term planning and fixed planning.
The distinction between detailed lead-time planning and fixed lead-time planning applies only to order planning. The distinction does not apply to master planning.