Hi
Availability check is carried out in different transactions like Sales order creation, delivery creation, Purchase order creation, goods issue and also in production order.The point to be noted here is every where the availability check is carried out using two basic elements.
1. Checking rule
2. Checking group
Now let us understand these two important elements.
Checking Rule
Checking rule is transaction based, i.e. In STD SAP system, if you are creating the sales order, then it is A, if delivery then it is B, if you are creating/releasing production order, then it is PP. This is almost fixed. What is the use of this...as a single element it does not have any meaning, but with checking group.
Checking group
Checking group is the one what you assign in material master at plant level, i.e. for different plant and for the same material or for same plant different material there can be a different checking group. This is assigned in material master in MRP3 view, as a signal element it may not have much meaning except that it may be used for checking at which level - group level or individual level and quantities confirmed in the availability check are to be locked or not.
Combination of Checking rule and checking group will define the scope of check
In scope of check you will be defining all control parameters in t code OVZ9
Checking rules are predefined in SAP almost
Go to img-s.d-basic functions---availability check and transfer of requirements
There you check all the img activity related to availability check and transfer of requirements which will give you a fair idea
_The main is defining control parameters for availability check t code OVZ9_
Regards
Raja
Edited by: ramanathan raja on Oct 31, 2008 1:15 AM
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