Planning Mode in MRP

Hi Gurus,
Can any one throw light on Planning Mode in MRP run?
I basically what to know the difference and impact of this on MRP run?
I have basically done this keeping all other parameters same, but go same reult for planning mode 1, 2, 3.
a) Scenario 1 - I have changed the MRP controller in material master.
After MRP run with 1, 2 and 3 - Observation is planned order number is changed and it has new MRP controller.
b) Scenario 2 -I have changed the BOM of header material and added a new child item.
After MRP run with 1, 2 and 3 - Observation is planned order number remains the same and in all 3 cases picks the new BOM.
What the difference then?
Can anyone if have document made pl share it with me.
Thanks in advance,
Srini

Planning Mode 1
Planning mode 1 is if you have only set the planning file entries (net change planning indicator and net change planning horizon indicator) in the planning file for a material (see Planning Run Type).
In the planning run in planning mode 1 the system reactivates the existing planning data, that is, procurement proposals that are not firmed remain on the database and are only then adapted, if the dates and quantities do not suit the new planning situation. The system only re-explodes the BOM for adjusted procurement proposals. System performance is thus improved.
Example of changes that cause planning mode 1 to be set:
Changes in date and quantity
Requirement changes
Changes in the lot-sizing procedure or MRP type
Planning Mode 2
Planning mode 2 is if a material has planning file entries and the Re-explode BOM indicator is also set in the planning file.
In the planning run in planning mode 2, the system re-explodes the BOMs for all existing procurement proposals that are not firmed and also for those, for which the dates and quantities do not have to be adjusted.
Example of changes that cause planning mode 2 to be set:
Changes to the material BOM
Changes to the sales order BOM
Changes to the phantom assembly BOM
Changes to references assigned within BOM
Changes to material classification
Change of production version in material master or planned order
Change or conversion of BOM explosion number
Planning Mode 3
Planning mode 3 is if a material has planning file entries and the Reset order proposals indicator is also set in the planning file.
In planning mode 3 existing procurement proposals that are not firmed are completely deleted from the database and recreated. The system then re-explodes the BOMs.
Example of changes that cause planning mode 3 to be set:
In-house production time
Planned delivery time
Scheduling margin key
MRP controller
Regards,
Ajay Nikte

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Hi
I am aware of Planning mode 1,2 and 3. . Planning file entry does the job of updating appropriate planning mode like Net change or Net change in horizon, BOM re-explode or reset proposal. But,I want to understand in what circumstances we prefer to go with planning mode 2 or 3 other than 1 in MD01 or MD02 or MD03 as anyway this is covered for all necessary items in planning file entry by system. I am fully aware of the functions of all three planning modes. Just I want to understand the situation in which it will be overwritten by user selecting 2 or 3 in MD01 or MD02 or MD03. Because I have never come across such situation where I deliberately run with planning mode 2 or 3 in MD01 or MD02 or MD03.
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Hi Sudhar,
Planning Mode 1 is used when:
1.Changes in date and quantity
2.Requirement changes
3.Changes in the lot-sizing procedure or MRP type
Planning Mode 2 is used when:
1.Changes to the material BOM
2.Changes to the sales order BOM
3.Changes to the phantom assembly BOM
4.Changes to references assigned within BOM
5.Changes to material classification
Planning Mode 3 is used when:
1.In-house production time changes
2.Planned delivery time changes
3.Scheduling margin key changes
4.MRP controller changes
Regards
Vinod
Edited by: Vinod Mohan on Mar 1, 2010 6:41 PM

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When running regenerative planning in MDBT for plant with following details ,The system has to provides planned orders for the materials .
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I checked the material master and found that procurement type is external procurement.Business need to create planned order for the materials and then want to convert it to purchase requisition.
MRP group is assigned to the materials but no creation indicator maintained for the MRP group.
Please tell me why this run creates purchase requisitions suddenly and in the next run it disappears?

Hello
Maybe someonelse is running MRP in another transaction, such as MD02, with a different parameter. Check on transaction MD05 when was the last MRP execution and the user that ran it.
Also check if there is any active implementation of BAdI MD_MRP_PARAMETERS.
If you don't have a cretion indicator, maybe it would be useful to set it for your MRP group, with the parameter 3, in order to make sure that planned orders will be created.
BR
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During normal course, if MRP control parameter for Planning mode is set to u20183u2019, system deletes all open PR & Planned orders & creates new PR & new planned orders.
But in our business scenario, where we have release strategy for MRP generated PR, even these released PR get deleted. This results in re-analysis & releasing of MRP generated PR which itself is a tedious & time consuming task.
We are looking for a solution where PR will not get deleted during MRP.
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You may check to your release indicator for in SPRO-Materials ManagementPurchasingPurchase RequisitionRelease ProcedureProcedure with ClassificationSet Up Procedure with Classification> Release indicator for the final release --> Indicator: Fixed for requirements planning (is checked or not, try to check it) and retry the scenario.

Release PR Should not get deleted in md51,planning mode 3

Hi all,
We are facing a problem in MRP run taken through transaction code MD51. This Problem (as explained below) will occur when MRP control parameter for Planning Mode will be set to u20183u2019 (Delete and recreate planning data).
During normal course, if MRP control parameter for Planning mode is set to u20183u2019, system deletes all open PR & Planned orders & creates new PR & new planned orders.
But in our business scenario, where we have release strategy for MRP generated PR, even these released PR get deleted. This results in re-analysis & releasing of MRP generated PR which itself is a tedious & time consuming task.
We are looking for a solution where PR will not get deleted during MRP.
Thanks
Sukumar
Edited by: skumar kalame on Nov 10, 2008 1:59 PM

Hi,
The planing time fence is maintained in MRP-1 view of the material in workdays. You can also have this defined in the MRP group. But the value in material master takes precedence over MRP group.
Use - It is a kind of safety fence which is used to protect any automatic changes to take place for firm order proposals during MRP run.
Depends on - Firming indicator needs to be maintained for the MRP type. This can be set in customizing for the MRP Type. This basically specifies how you want to firm the order proposals. Please note there are 5 types of firming
The SAP help for firming type reads as below:
firming type 0
The system does not firm procurement proposals automatically.
firming type 1
Procurement proposals that move into the planning time fence are firmed automatically, as soon as their date lies at least one day before the end date of the planning time fence. The date of new procurement proposals that are created in the planning time fence is displaced to the end of the planning time fence. These new procurement proposals are not firmed.
firming type 2
Procurement proposals that move into the planning time fence are firmed automatically, as soon as their date lies at least one day before the end date of the planning time fence. The system does not create any new procurement proposals within the planning time fence; that means, the system does not balance the shortage situation in the planning time fence.
firming type 3
Procurement proposals that move into the planning time fence are not firmed automatically by the system. All procurement proposals that are necessary for requirements coverage are displaced to the end of the planning time fence.
firming type 4
Procurement proposals that move into the planning time fence are not firmed automatically by the system. The system does not create any new procurement proposals within the planning time fence; that means, the system does not balance the shortage situation in the planning time fence.
If helpful award points
Regards,
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Hi experts!
I need to disable Planning Mode option = 3 at my system, because users are not authorized to delete physically.
We have been investigating butwe didnt find any security point to limit this activity.
Do anyone know if there is any way to restrict the use of this option of the parameter at MD03?
Thank you in advance.
Best regards,
cecil

Hi,
One suggestion:
For any Organization the MRP Run is very crucial..
Only few people should be authorized to execute the MRP (MD02 & Md03)
Only system administrators can have authorization for MD01.MDBT.
So, remove authorizations for MD02 and MD03 for most of the users except the Department Heads..
Schedule MRP in the background at night..
Hope this helps..
Revert for further discussion..
Regards,
Siva

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Dear all,
We want to RUN MPS for Products (MRP type M0) only for Re-explode Bom components and not for PldOrd creation .
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Processing key - NETCH
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Re-exposion is form of planning with reading fresh components from BOM when you re-run the MRP and if you go the basics of MRP then output of MRP is always either planned order or purchase requisations hence you cannot avoid this.
There might be other work around to avoid planned order after MRP run such using switching off planning within bill of material for selected components or to all componnets. or use do not plan "dependent parts" in MRP4 view. OR use MRP type no planning "ND" to all components.
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Hi All
I request your help in understanding MRP results in below mentioned scenario:
Material: A
Planning Calendar: D1 (Monday only)
MRP Type: PD
Lot size: Z1 (this is copy of PK with Period Start = Start Date)
Safety Days Time: 3
Safety time indicator: 2
In house Production time: 1
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NETCH
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"My PIRs are:
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"Friday :08.4.11" ---- "-100"   ------ "0" ----   "-100.00" ------ "0" ----   "-5"
"Monday: 11.4.11" --- "-200" ----- "0" -----    "-300.00" ------ "0" ----- "-2"
"Wed      : 12.4.11" --- "0" ---- "370" ---------- "70.00" --------"20"----- "5"
"Thursday 14.4.11" --- "-50" ------ "0" -------- "20.00" ------- "0" ------"3"
"Saturday 16.4.11" -- "-10" ---------- "0" ------- "0.00" -------- "10" ----- "1"
"Sunday    17.4.112" ---- "-10" ------- "0" ------- "0.00" ---------- "0" ----- "0"
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"Thursday 21.4.11" -- "-1000" ------ "0" -------"1000.00" ------- "1000" --- "4"
"Monday   25.4.11" --- "-1000" ------- "0" ---------- "0" ----------- "0"------- "0"
"Tuesday 26.4.11"---- "0" -------- "100" -------- "100" -------- "100" ----- "3"
"Friday      29.4.11" --- "-100" ---- "0" ------ "0" -------- "0" -------- "0"
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I am not able to relate the relation between Planning calendar and Lot size procedure used. Also what would happen if I make planning calendar valid for two days in a week.
Thanks in advance
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Thanks dear
Yes you are right the Planning Calendar starts 18.4.11 and ends 24.4.11
Now as far as first planned order is concerned I thought it should be scheduled to start&end on Monday 11.04.11, rather it starts&ends on Tuesday 12.4.11. Also the actual coverage days goes up to 5 days even though its maintained for 3 days.
Similarly the second planned order also comes up on Tuesday 19.04.11 and covers 6 days (more than the setting and planning Calendar of only Monday)
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Dear,
In MD61 or MD62 and select the perticular material and then goto edit and period splitting and select Day.
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Also refer this useful link,
Re: Requirement
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