The replenishment lead time is the duration in working days sufficient to procure or produce any (reasonable) quantity of a material. Any requirement with a material availability date after the replenishment lead time can be confirmed as there is enough time to produce or procure it, even if it is not currently available. The replenishment lead time is considered in the product availability check and can be disabled in the availability check control.
For materials procured externally, the replenishment lead time equals the processing time required by the purchasing department plus the planned delivery time and goods receipt processing time, as defined in the material master.
For materials produced in-house, there are different ways to determine the replenishment lead time, depending on settings in the material master, as detailed as follows:
If the total replenishment lead time is maintained in the material master, it is used as the replenishment lead time in the product availability check.
If the total replenishment lead time is not maintained in the material master, the in-house production time plus the goods receipt processing time is used as replenishment lead time in the availability check.
If the total replenishment lead time is not maintained for certain material types (for example, finished goods), the lot-size-dependent in-house production time is used. When this happens, the replenishment lead time equals the setup time plus interoperation time and processing time.