SAP Production Planning Table

First material, second MRP group and last plant parameters. E.g. System first checks for
material, if strategy is defined there, that is used, if it's not maintained there, then it
checks if it's defined in MRP group.
That is the same for all MRP parameters, not only strategy.
If you wanna test how it works, try this:
1. create an mrp group, say 0001, and assign strategy group "40 - planning with final
assembly" in the MRP group parameters.
2. create a material, say product1 and define planning strategy as "20 - make to order".
And also enter the MRP group 0001 in material master.
3. Create a sales order and create an order item for product1.
4. In the sales order header, go to the Procurement tab. There, you will see the
requirement type for product1, which is automatically selected by system according to
the planning strategy it uses. That requirement type should be "KE" if strategy 20 is
selected, or it should be "KSL" if strategy 40 is selected by system.
5. In my test, system selected KE requirement type, which indicates that system used
strategy 20, and which I have entered in the material master. It didn't select KSL, which
indicates that system uses strategy 40, which is entered in the mrp group. Finally, this test
shows that system takes the planning strategy in material master (if it's entered), not the
strategy in MRP group.
I think you can now make another test how system uses MRP group's planning strategy.
(hint: Delete planing strategy from the material master and repeat the previous test steps.
That would end up using strategy 40, which is selected using the MRP group parameters.)
With Compliment: Osman Karslioglu
When do we use planning without final assembly
strategy?
We have mainly MTS, MTO, planning with final assembly and planning without
final assembly. Now when we are dealing with planning with final assembly, we
would usually produce subassemblies (HALBs I guess) using make to stock, so do we
use a planning strategy 70 for subassemblies and do a MRP run. To my knowledge I
thought we run MRP only for final products (with final assembly) so in that case
how would we plan for subassembly products.
I get to understand you are using strategy planning with final assembly. So you are using
strategy 40 for the finished product.