Availability check

1. Availability check is an integral part of the business process that determines if the required delivery quantity can be met on a required delivery date. For this purpose the system takes into account pre-delivery activities such as scheduling for picking or packing times and the time taken to produce or obtain the material. It also performs several background functions such as
Backorder processing, rescheduling and ATP quantities.

2. Backorder processing: processing of a sales order that has not been fully confirmed or not confirmed at a certain delivery date.

3. Rescheduling: is a proposal of how – confirmed quantities already assigned to a sales order can be reassigned to other sales orders that have a higher priority.

4. Available to promise (ATP): is a process of checking the available quantities of a material. The ATP quantity consists of warehouse stock + planned receipts (incoming stock) – planned issues (outgoing stock). to examine stock on hand (CO09) proceed to logistics – sales & distribution – sales – environment – availability overview.

5. Replenishment lead time (RLT): is the time taken for the material to become available either internally (in house production) or externally (from a vendor). The most important things to consider during an external procurement are purchasing and MRP2 (procurement) views of MMR where the processing time for purchasing, planned delivery time and goods receipt processing time are taken into account. On the other hand internal procurement is based on in house production time (MRP 2 view) goods receipt processing time or alternatively RLT time, which is found on MRP 3 view.

6. RLT (Replenishment Lead Time) is the time taken for the material to become available. RLT is only used when doing an ATP check (Available To Promise). The value of RLT for a material is specified on material master record.