Looking for clarification on why MRP is create P’req lines when there is open supply lines greater than the safety stock.
The Safety Stock on this item is 6, the Minimum Lot size is 12. There is 0 on hand and 20 on a purchase requisition (seen above). The P’req was entered manually and as a result of a previous MRP scheduled task.
Should MRP consider all open po’s and requisitions when calculation MRP amounts?
Dates and Lead Times will kill you with that setup, MRP is never going to recognize any pending supply if the lead time is 0. That essentially means for MRP, check if there is any supply that was here today - No, ok, then create another requisition because you are going to be late. It will do that every day, over and over.
You have to build in realistic lead times, something at least close to reality, even 1 is better than 0. Then MRP will start to align the supply with demand. Because it is safety stock driven, that is the worst case with 0 lead time because safety stock need date is now, where as order driven demand will be on a date that is required which will hold up MRP creating new supplies until the need date.
+20
Looking for clarification on why MRP is create P’req lines when there is open supply lines greater than the safety stock.
The Safety Stock on this item is 6, the Minimum Lot size is 12. There is 0 on hand and 20 on a purchase requisition (seen above). The P’req was entered manually and as a result of a previous MRP scheduled task.
Should MRP consider all open po’s and requisitions when calculation MRP amounts?
Since the original Req is in Released status, I’m guessing your Site is not set to Use Released Purch Reqs in Planning (Site > Manufacturing > General). If it were, the system would not have generated the additional requisition for 12 to satisfy the Safety Stock. Check the MRP Projected Onhand in MRP Part Information > Receipts and Deliveries with your 2 req situation in IPAP. I’m guessing yours says 12, when if using Released Reqs in Planning it would say 20.
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