I need in urgency to analyze the requirements and want to know basic differences between SNP Heuristics, CTM and Optimization Costs and to what scenario they are going to choose particular engine.
Any help is greatly appreciated.
Please see the <a href="http://help.sap.com/saphelp_scm50/helpdata/en/de/7c5c3c3806af06e10000000a11402f/frameset.htm">SAP HELP</a> comparison among the planning methods.
Simply speaking, you use Hueristics if you need a simple fast inexpensive and roughly accurate supply plan.
You use CTM in case you want Pegging of orders, more accurate supply plan
Finally if you want an optimum supply plan with costs involved, you can use Optimizer.
In the clients I see, Heuristics is the most widely used as it is easy and inexpensive gives OK results
CTM is more used in hitech industries and Optimizer in case they have abundant money and very accurate Supply plan.
The success rating in decreasing order is Heursitics, CTM and Optimizer.
Hope this help.