Technical difference between MRP and MPS

[#1]

Dear all,

Please dont say that this the repeated question and please be patience,

I tried alot to find the difference between MRP and MPS. What makes the difference, in many of my interviews i was failed to give the answer. what ever activities you do in MPS we can do it in MRP also. so dear exports what are the activities that doesn't support in MRP we do in MPS ? if there is no difference why the SAP proposed MPS planning? I know general concept of MRP and MPS.

Reagards,

Pradeep.

[Former Member · Accepted solution]

This message was moderated.

[Former Member · Accepted solution]

Dear all,

Thanks for spending your valuable time and valuable answers, this discussion really helpful to me.

Here I am closing the thread.

Pradeep

[dhaval_choksi3 · Accepted solution]

Dear Malladi,

One more point i like to highligh, If you use MRP for both both Inhouse and externnely procurrred materials then during total mrp run system will plan them togther in which PR dates lies around same date basd on your lot size, so to come out from this situation use mps for inhouse produced materials and pd for  externally procurred items. FIrst run MRP it will generate Plan orders and dependent requirment. Then perform capacity lavelling followed by MRP run, you can see difference in PR dates.

Regards,

Dhaval

[Former Member · Accepted solution]

well explained!

[ArturoSenosain · Accepted solution]

Dear Srini N

Its kind to quote if you are not the owner of a text,  I wrote this stuff in 2006 when i was doing the APIC training and then post in ITToolbox, and Im still alive.

****************************************************************************************************

As you can see, there are not too differences if you review MRP and MPS isolated, but lets think the BIG PICTURE, and can find the difference is just an procedure stuff:

1: RUN MPS (tcode: MD40). SAP do the planning run multilevel, also considering the  MRP materials.

2: Do the the necesary MANUAL changes in your MPS materials Planned Orders, remember that the planning run is  "JUST AN ADVICE" and never can replace the human decision. Here, you have your MPS Plan, and also the consumtion Plan (dependant requirements)

3: Then, with the dependant requirements OK (acording to MPS's Materials Planned Orders), do MRP RUN (tcode: MD01). The MRP run dont change the MPS plan.

The idea of MPS and MRP is to "separate" materials, in order you can run "masive process" in order. The algorith of mps and mrp are the same. Both work with the PlanTime Fences and Fixation types, rescheduling is the same,  and so on.

*******************************************************************************************

[rupesh_brahmankar]

Dear,

MRP-Material Requirement planning. It is used for multi level planning. But MPS is used for critical level or single level planning. Planning time fence is must for MPS.

In The MPS, the company level critical components are planned and in the materials master, the MRP type is chosen accordingly, this is generally done for single level. This

is planned separately and this can be also done using interactive planning.

In MRP or time phased planning, the BOM is exploded and netting is done and component level quantity and time requirements are planned.

First MPS is done, then MRP is run.

Kindly refer this link for more details,

http://sap.ittoolbox.com/groups/technical-functional/sap-log-pp/mrp-vs-mps-990686

Regards,

R.Brahmankar

[Former Member]

This message was moderated.

[Former Member]

Hi,

MPS:

Master Production Scheduling: It is the planning of  a critical product..Critical in the sense the material may be high valuated.

MRP:

Material Requirement Planning: It is the planning of any kind of material. The result will be purchase reqns and planned orders.

Also check the below link:

http://www.erpgreat.com/production/difference-between-mrp-vs-mps.htm

Regards,

Alok Tiwari

[Former Member]

Dear all,

I have given the same answers, can be used for critical parts, single level planning, time fence etc. Again the interviewer asking, cant we do all these in MRP? if yes then what makes the difference.

Regards,

Pradeep

[rupesh_brahmankar]

Dear,

MPS plan the critical material which has high impact on company profitabiliy and also consume the critical resource. In MPS run we will plan only these material as we know they need to plan separately  after MPS run we will check capacity and feasibility of the schedule..After everyone approved of the plan it was feed to the MRP system for execution. Normally the MPS would not create any plant or purchasing requirements, and MRP did. So that we can change the MPS plan and requirement as per the feasibility.

For MPS materials planning does not change every day but typically after 2-3 months. Once We have the plan for finish MPS product with schedule then we can plan the down material by MRP also.

Hope clear to you.

Regards,

R.Brahmankar

[Former Member]

Dear Brahmankar,

You meant say, there is no difference between MRP and MPS in Planning and Processing, what ever the activities we do in MPS, we can do it MRP also. Only thing is in order to differentiate Planning of the Critical Products we will go for MPS planning. Dear all please correct me if i am wrong.

Regards,

Pradeep.

[Former Member]

yes, you are true.

[rupesh_brahmankar]

Dear,

Yes correct, MPS is interactive planning.

Regrads,

R.Nrahmankar

[Former Member]

hi,

normally we manage high valued or materials for which extra attention is needed (because of high cost or lead time etc etc)...are planned by MPS...

so generally Finished products are being planned....and it will generate requirments for dependants.

now, follwed by a  MRP run will suffice the requirments planning cycle.

this gives better control on valuated materials....and their planning process....

sandeep