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Former Member
Jul 06, 2009 at 02:43 PM

Basic Scheduling in MRP run

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Hi Everyone,

I have a question on determination of basic dates in the MRP run for a material.

I'm working with Planning Strategy 21 (MTO with projects).

The total lead time of the finished product is 12 days (Inhouse Prd Time = 10; GR Processing Time = 2; Sch. Margin Key = 000).

The total lead time of the raw material is 23 days (Planned Delivery Time = 20; GR Processing Time = 3; Sch. Margin Key = 000).

MRP run Date / Today's Date = 6th July

Requested delivery date in Sales Order = 10th July

Planned Order Available Date for finished Product = 20th July (including holidays as per factory calendar)

However, the Purchase Requisition available date for raw material = 29th July.

Questions:

1. Why is the Planned Order Available Date for finished Product not rescheduled after the Purchase Requisition available date for raw material in the MRP run i.e. finished product planned order should have a start date = 29th July or thereafter?

2. When I run ATP check in the Sales Order prior to MRP run, the system does not consider the procurement lead time of raw materials. It only takes the lead time of the finished good from its material master while proposing the delivery date. Why?

Please help.

Thanks,

Nitin