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MRP Type V1 consider Planning Horizon

Dear Expert,

I have set MRP type V1 as our MRP procedure (Manual Reorder Planning w/ External Requirement). The following scenario that I am facing problem;

ROP = 100

Lot Size = HB = 110

Stock available = 0

Plan Delivery Time = 45

Planning Horizon = 75 days

Sales Order #1 = 20 (Delivery Date = 15/01/2015)

Sales Order #2 = 100 (Delivery Date = 30/01/2015)

Sales Order #3 = 150 (Delivery Date = 15/05/2015)

When I run MRP on 01.12.2014 with parameters;

Processing Key = NETPL

Create PR = 1

SA Delivery Scheduling line = 3

Create MRP List = 1

Planning Mode = 3

Scheduling = 1

The system trow me result (MD04)

PR = 380 w/ delivery date 15.01,2015 (Plan delivery Time is 45)

My query is, why does the system consider all requirement even beyond Planning horizon, the result suppose to be PR = 230. Is it V1 does not consider Planning horizon and how to rectify? Appreciate any single answer, thanks.

Best regards,

M. Mahjuddin

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1 Answer

  • Nov 06, 2014 at 06:49 AM

    one figure is missing: your current stock.

    how MRP does with V1 reorder point with external requirements is explained with example in OSS note 51576 - MD01: MRP type V1/V2: reorder point w. requirements

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    • Hi

      I know that posting to old threads is not a good habit (forgive me @Jürgen L) but this question was asked again on the PP forum and I made a lot of research about it.

      Basically, reorder point with external requirements will consider external requirements outside the planning horizon, because otherwise a planning run with key NETCH would calculate a different quantity for the replenishment proposal than a planning run with key NETPL, which is not a desired behavior.

      Please find the details of my analysis on the thread below:

      BR

      Caetano