There are three types of availability checks –
- Check on basis of ATP quantities.
- Check against product allocation.
- Check against planning.
AVAILIBILITY CHECK & TOR IN SIMPLE TERMS (Against ATP):
When a material is entered into the Sales Order, then the system first checks in the Material Master, whether Strategy Group (in MRP3 tab) has been maintained or not. The Strategy Group remains assigned to Requirement Type, and Requirement Type remains assigned to Requirement Class. Requirement Class decides whether Availability Check and Transfer Of Requirement (TOR) to be carried out or not. The Schedule Line Category re-confirms the same, i.e Availibility Check and TOR to be carried out or not. If incase Strategy Group is not maintained in the Material Master, then the Requirement Type is decided from MRP Type + Item Category combination. The Requirement Class decides what type of TOR to be carried out. And if Availibility Check is to be carried out then the system checks the Checking Group (in MRP3 Tab of Material Master). The Checking Group is linked to Checking Rule. The Checking Rule takes into consideration the Current Stock + Planned Inward Movement + Planned Outward Movement of stock and determines the availability of stock.
The Flow is as follows:
Sales Order -à Material is Entered in Sales Order --à System Checks the Strategy Group from the Material Master (MRP3 tab) --à Strategy Group assigned to Requirement Type --à Requirement Type assigned to Requirement Class --à Requirement Class Decides what kind of TOR to be carried out and also decides Availibility Check to be carried out or not ---àSchedule Line Category re-confirms it --à If Availibility Check is to be carried out, then system checks the Checking Group (MRP3 tab) in Material Master --à Checking Group is assigned to Checking Rule --à Checking Rule calculates Stock Availibility based on Current Stock + Planned Inward Movement + Planned Outward Movement.
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