MRP looking past planning horizon?

[Former Member]

Dear Experts,

We have a material that exists on a purchase order. The material is a HALB, with MRP Type = PD and

Procurement Type = F (purchased). The Planning Horizon for the plant is 180 days and there is no planning horizon defined for MRP Group. The Purchase Order has a delivery date of 12/31/2009 (well past the horizon). But, Purchase Requesitions are not being created during the MRP run. The MRP settings we are using are NETPL, 1, 3, 1, 3, 1.

It is acting like it is looking past the planning horizon and seeing the purchase order that is far out in the future.

Does anyone have any ideas on what is happening?

Thank you,

Melissa

[Former Member · Accepted solution]

Hi Melissa,

Can you check the rescheduling horizon maintain in OPPQ & OPPR.

If helpful award points

Regards,

Vivek

[Former Member · Accepted solution]

Thanks for the fast response Vivek!

The rescheduling horizon is empty in OPPR for the MRP Group. It is 250 days in OPPQ for the plant. The purchase order delivery date is past 250 days. Can you explain how the rescheduling horizon would effect MRP?

Thanks,

Melissa

[Former Member · Accepted solution]

Hi Melissa,

The 250 days is workdays & not calendar days & hence it is beyond 31/12/2009. This is the reason why the system is considering the PO.

If you're in test system, you can test by increasing the delivery date of the PO say to 31/12/2010 & run MRP, it would create a procurement proposal.

Hope it answers your query.

If helpful award points

Regards,

Vivek

[Former Member · Accepted solution]

Thank you so much for the info - I think this will fix our problem!

As a final request, could you explain how the reschedule horizon plays a part in MRP planning? I thought it only used the Planning Horizon. We have recently upgraded to ECC 6 and have started seeing this problem - do you know if anything has changed in ECC 6 reguarding reschedule horizon.

Thanks again,

Melissa

[Former Member · Accepted solution]

Hi Melissa,

Read thru the below link, it should give you a fairly clear picture.

http://help.sap.com/saphelp_40b/helpdata/en/b4/7055967935d1118b3f0060b03ca329/content.htm

If helpful award points

Regards,

Vivek