Difference between MPS and MRP

[former_member184595]

Hi,

We are running MPS 3 times a week in adapting mode, then MRP runs once a week in a regenerative mode(after the receipt of the forecast).

Appreciate if some one can suggest why we need to run MPS and then again MRP also. Also explain what exactly MPS in adapting mode means and MRP in a regenerative mode means.

Thanks in advance.

[Former Member · Accepted solution]

Hi Aditya.

MRP is not a subprocess of MPS.

For triggering MRP, your MRP type will be PD or P1, or in series.

For triggering MPS, your MRP type will be M0 or M1 or in series.

MRP : We can use it for all the materials.

For planning run, use tcode

Total planning MD01

Single item multi level planning MD02

Single item single level planning MD03

MRP in background - MDBT

Stock list MD04

MPS: Finished product & important assemblies are planned separately. These are called MPS items. System creates requirements for the BOM directly below only one level.

MPS - you are planning for MPS items with more frequency to make sure you can procure or produce MPS items with more accurately and ensuring stock status changes in less frequency. Why you are doing this, may be you are ensuring that these high value items and high risky items planning should be accurate and should not hamper you production.

MPS is done only for One-level of BOM

MD41 - MPS run

MD43 - Interactive planning

MDO4 - Result.

Further refer these thread -

Re: MRP VS MPS

Re: MPS for material

Regards,
Srini

[former_member184595 · Accepted solution]

Thanks Vivek,Sharat,Srini for the valuable inputs. I have awarded points to all of you.

Appreciate if you can please give me some tips( Pre-Requisites which we need to check) which will help in understanding the MD04(Stock/Requirements) screen and evaluating the results.

If possible,can u please share me the links where we can find the "Exercises" to increase expertise in MRP/MPS evaluation. Thanks again.

[svs_sap · Accepted solution]

Hi Aditya,

Go through some links below, i feel already Mr Srini posted the transactions which are useful. Use MRP type with MPS and try the scenarios and test it.

Try with different MRP types firming types, and use planning time fence option. Maintain master data with different MRP types and planning strategy and check the result after MPS run.

http://scn.sap.com/thread/1250014

http://help.sap.com/saphelp_46c/helpdata/en/f4/7d30b644af11d182b40000e829fbfe/content.htm

http://scn.sap.com/thread/1798800

http://scn.sap.com/thread/1493730

In MD04 you can find only MRP type in stock/requirement list. Rest all MRP elements and details as per MRP run, and you can use same evaluation transactions to evaluate MPS result run. Check below screen for more details

Regards,

Sharat

[former_member184595 · Accepted solution]

Thanks a lot for your valuable guidance. Thanks Shrini,vivek for ur inputs. Points awarded to all of u.Thanks.

[svs_sap]

Hi Aditya,

You can get dofference between running MRP and MPS in the forum.

To explain in common understanding, you are planning for MPS items with more frequency to make sure you can procure or produce MPS items with more accurately and ensuring stock status changes in less frequency. Why you are doing this, may be you are ensuring that these high value items and high risky items planning should be accurate and should not hamper you production.

Regards,

Sharat

[former_member1362664]

Hi Aditya,

You should search before posting such a baisc thing on forum, You will get end numbers of thread on this subject. There are some for your reference.

http://scn.sap.com/thread/649040

http://scn.sap.com/thread/482133

http://scn.sap.com/thread/1376171

http://scn.sap.com/thread/1397621

Thanks