Random Weight Product Question

Question

Hi All
Do you know of any user exit that we can use in every movement in the Inventory Management (should cover all manual as well as automatic movements as well as custom movement types), so that for certain random weighted products, we can ask the user to enter Actual Qty in alternate Unit of measure (std SAP only stores the qty in base UOM) and then we store that information in a Z table to keep track of Qty in alternate UOM for each SKU/ Batch in a plant/ sloc.
With every goods movement for these random weight products, we then either add or subtract the Qty in alternate UOM (based on the movement type) to keep the qty in the alternate UOM accurate.
This is required because the nature of random weighted products is such that each piece can weigh differently eg 1 leg of ham can weigh 10Kg but another can weigh 11Kg and another may be 9 Kg. In mat master we can only store one fixed conversion factor between base UOM and alternate UOM. (perhaps 10 kG = 1each). Our base UOM is Kg and alternate UOM is Each. We want to do ATP in sales orders based on Each, delivery picking in each, but charge customer based on $ per Kg.
This is so that we have clear cut visibility of the stock in alternate UOM as well (std SAP updates stock in base UOM correctly but only shows the stock in alternate UOM based on nominal conversion factor from material master). We will use one of the product attributes in material master to indicate that the product is random weight product.
We are on ECC6 and are not contemplating using catch weight management at this stage as it may be 6 month project by itself and trying to see if we can do some customisations for random weight products.
Thanks
Subodh Deshpande

Answer 1

Why dont you use "Batch specific units of measure"  functionality?
here you can define a "Product unit" . this wil take care of your stocks per batch in Alternate Uom as well.
In every first  goods receipt of a batch  ( external or inhouse )  you will have to give the qty in AUM w.r.t Base unit :
eg: Material M1 ,  base unit KG   , AUM : BAG
Batch1 : 2 BAGs @ 3 KG per Bag .
Batch2:  2 BAGs @ 5 KG per Bag .
Now if you issue 1 BAG from Batch1 , system will reduce Stock by 3KG.
you can also see batch wise stocks in AUM (with batch specific conversion factor)  in BMBC report.
you can also develop some report with the help of batch characteristic values for Mass display of stocks in AUM.