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Former Member

CTM Proportional allocation of semi-finished SKU supply based on finished SKU demand after solve?


Semi Finished Part= SFP

Finished Part 1= FP 1

Finished Part 2= FP 2

Engine Used :CTM

Requirement: The supply of SFP should be proportionally split up in FP1/FP2 demand ratio at the end of entire horizon.

Example Week 1 Week 2 Week 3 SFP (Supply) 100 150
FP1 (Demand)
-50 -200 FP2 (Demand)
-100 -200 FP1 (Possible CTM Supply) 50 75
FP2 (Possible CTM Supply) 50 75
FP1 (Expected supply)
23 (113*(50/250))


FP2 (Expected supply)
45(136*(100/300)) 91(136*200/300))

In this case the end ratio of Total demands is (FP1 250/ FP2 300)=2.5/3

The supply plan given by CTM (consider equal priority on SKUs) is not desired because end of horizon it split up in equal ratio (125/125).

So the Total supply should be split up in 113/136 (250*(2.5/5.5)=113 & 250*(3/5.5)) but the plan should also respect the incoming SFP supply dates.

Open Questions:

1. Can we do this with standard CTM settings?

2. What is cleaner way of doing this in Macro Considering pre build/late build/on time supply from Semi-Finished?



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1 Answer

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    Former Member
    Jul 25, 2013 at 09:21 PM

    Has anyone come across such requirement before? Would really appreciate any pointers.


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