MPS and MRP

[Former Member]

Anybody can tell my what is the difference between T-Code MD41 (MPS)and MD02(MRP) . What the system will do when will use the tcode

[Former Member · Accepted solution]

Hi There,

1.Master production scheduling (MPS) enables you to plan materials that greatly influence a

company's profits and critical resources and therefore need to be planned more carefully. It is typical

for theses materials that the master production schedule is initially defined on the level of this critical

or important material before the dependent assemblies and purchased parts are planned and procured.

This means that changes made to these critical parts are not copied to the dependent parts, thus

avoiding any disruption arising during production and procurement of purchased parts.

2. You plan the master schedule items (MPS items) and the non-master schedule items in separate

planning runs. You are able to specify finished products or assemblies for master schedule items

provided that you have entered a corresponding MRP type per plant or per MRP area in the "MRP 1"

view of the material master. You must define the MRP procedure "M" (master schedule item

procedure) in this MRP type in Customizing for MRP types (Customizing activity "Check MRP

types").

3. The master production scheduling run only plans the master schedule items. Master production

scheduling is executed with the same logic as material requirements planning but without planning

materials that are not labelled as MPS items. Dependent requirements are created for the next lowlevel

code, but planning is not executed for these items unless they are MPS items.

4.The results of master production scheduling are not passed on to dependent parts until the master

plan for the critical parts has been processed and finely-tuned. Master schedule items are not planned

along with the MRP run to ensure that you can plan these materials independently.

Master production scheduling takes place on two levels:

1. Master production scheduling (MPS) plans the master schedule items

on the basis of the requirements that exist for these parts (for example,

planned independent requirements). The MPS run generates planned

orders for the master schedule items and the corresponding dependent

requirements on the BOM level below. Capacity leveling is possible on

the MPS level.

2. MRP plans the other assemblies and components in the BOM structure.

5. In the case of a total MPS run, you can combine both steps by setting the indicator "Process MRP materials" in the initial screen.

Basically this can be used when you have a multi level BOM.

Where you want to plan some of its maerial very accurately and want to have a close wach on there planing. then you can assign MRP type MPS to them and plan them saperately through MD41BY by doing this system will create Independant Req. for them and dependant req. for there one level below component only.Rest of the material will be planned Through MRP run MD02/MD01

Regards

Hemant G

[Former Member]

Hi Kamal Raj,

MRP is used commonly for calculating the material requirements for the material.MRP MD02 will work if you maintain MRP type relevant to MRP like PD etc is used.

MPS is used for specific or important material which planner has to closely follow.

MD41 will work if you maintain MRP type M0,M1 etc., Different firming options are available in MPS you can refer SAP help for that

Regards

Ranga

[Former Member]

But when I use MD41 without using MRP type M0 or M1---- on the still plans the material then what is the difference in MD02 and Md41.

[Former Member]

Hi Kamal,

Can you please indicate your requirement. Because I am confused Why you want to run MD41 without M0 and M1.

also let me know what MRP type you are using

Regards

Ranga