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MRP horizont and replenishment lead time

Hi experts.

I was studding the MRP types and MRP horizont and didn't find a standard solution to my requirement.

Scenario: Purchased material, Reorder Point 100un, planned delivery time 30 days

At MRP/MD04:

     Today:                 Stock: 30un

     + 5 days:             +20un purchase order

     + 10 days:           +20un purchase order

     + 40 days:           +30un purchase order

Up to the end of replenishment lead time there are 70un (30+20+20). The last one should not be considered because is outside the RLT.

So when MRP runs, a purchase requisition of 30un is expected, to be delivered in 30 days.

What is happening is that MRP is considering the last purchase order and just adding an Exception to anticipate.

What I realized is that the MRP only takes in consideration for purchase orders the MRP horizont defined at OPPQ or OPPR.

I’ve tested MRP types V1 and VB, they only change the behavior of requirements (sales orders, transfer orders), not for purchase orders.

Does anyone knows a standard configuration to MRP consider only the purchase order inside the material replenishment lead time?

Many thanks in advance.

Darley

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