Planning horizon and scheduling horizon

hi gurus
what is the difference beween planning horizon and scheduling horizon
and how it will effect on production planning/MRP
pls give me a detailed answer
Faisal

hi,
planning horizon
planning horizon specifies the period for the "Net change planning in the planning horizon".
In this kind of net change planning, only those materials that have undergone a change that is relevant to MRP within the planning horizon are included in the planning run. Such materials receive a net change planning indicator in the planning file.
The length of the planning horizon should include at least the following:
the period in which sales orders are received
the delivery periods
the total lead times of the materials
re-schedule horizon
Define Rescheduling Horizon
The rescheduling horizon is the period in which System checks whether the existing dates still suit the requirements situation for receipt elements that can no longer be automatically changed in the planning run. If the dates of a particular element are no longer suitable
effect:
If no rescheduling horizon has been maintained, the system will not carry out a rescheduling check.
The system calculates the rescheduling horizon from the end of the replenishment lead time in reorder point planning.

Similar Messages

Planning horizon and scheduling agreements

We have a planning horizon that goes out 1 year. However MRP stock requirements is showing planned orders for scheduling agreements that go out beyond the planning horizon.
Is there a reason MRP sees these MRP elements with dates well beyond the planning horizon of 1 year?

Hi,
In MRP we can run the MRP with Planning run Type With indicator
NETCH(Net change planning) and NETPL(Net change planning in the Planning Horizon)
Planning Run Type in the Initial Screen
Use
You use the planning run type (Processing key indicator in the initial screen of the planning run) to determine which materials are to be planned.
Features
There are three different planning run types:
During regenerative planning, all materials are planned for a plant. This makes sense when you are carrying out the planning run for the first time as well as later during production if data consistency cannot be guaranteed due to technical error.
The disadvantage of regenerative planning is the fact that the system has to deal with high capacity loads because all materials are planned, including materials, which may not be affected by the planning run.
To overcome this disadvantage, it makes sense during production to carry out the planning run using the net change planning procedure. The only materials that are included in the planning run are those, which have undergone a change relevant to MRP since the last planning run, for example, because of warehouse issues or sales orders, changes to the BOM and so on.
The net change planning procedure makes it possible for you to execute the planning run in short intervals, for example, in daily intervals. You can thus always work with the most up-to-date planning result.
You can use net change planning in the planning horizon to shorten the MRP planning run even further. The system then only plans materials that have undergone a change relevant to MRP within the planning horizon. In order to also plan changes outside of the planning horizon, you must execute the net change planning run in greater time intervals.
You define the planning horizon per plant or per MRP group in Customizing for MRP in the IMG activity Define planning horizon. The planning horizon should be at least long enough to cover the period when sales orders are received. It must also accommodate delivery periods and the total lead times of the materials.
In single-item planning, you can only choose between net change planning and net change planning in the planning horizon. Regenerative planning is not useful, because the material has already been defined and does not have to be determined after the evaluation of the planning file.
The system automatically flags the materials that have undergone a change relevant to MRP with a corresponding planning file entry in the planning file (see also Checking the Planning File and Planning Run Type).
Regards,
nandha

Getting an error while activating a planning area "Enter values for planning horizon From and planning horizon To for the storage time profile level"

Dear S&OP community,
I am getting following error while creating a planning ares in a newly installed sandbox. "Enter values for planning horizon From and planning horizon To for the storage time profile level".
This what I did...
1) Created new attributes and master data objects and activated them successfully.
2) Time profile created and activated successfully
3) Trying to create planing area by assigning time profile in step 2 and assigned master data from step1..Unable to save the data and system returns
this error - "Enter values for planning horizon From and planning horizon To for the storage time profile level"
My understanding is time profile needs to be active but doesn't have to have values...
Any help is appreciated.
Thanks,
Krishna

YS,
Here are my time profile settings
Level       Name          Display Horizon - Past Display Horizon - Future
1             Monthly     -6                                       11
2             Quarterly     -2                                       3
3             Yearly        -1                                       2
Time profile is active and but time profile data is not loaded
Thanks,
Krishna

Planning horizon and planning time fence

What is the meaning of terms
- planning horizon.
- planning time fence.
Where and how we can use these terms?
Kindly explain with a example.

Hi,
1. planning horizon
Net change planning in the system only plans materials that have undergone a change that is relevant to the planning run within the period which you defined as the planning horizon. The system sets the net change planning horizon indicator automatically for these materials.
In net change planning in the planning horizon, the system only plans those materials provided with the net change planning horizon indicator.
2. planning time fence
The planning time fence dictates a firm period for planning purposes. Subsequent MRP runs will not create planned orders within the time fence but will place them just outside it. Orders must be manually moved forward if desired. The idea is to create a short term period of plan stability.Check the MRP tabs on the Material Master for the planning time fence
period for the material.
Regards,
Sankaran

SNP and PPDS planning horizons

Hai,
        I am reading through SNP and PP/DS planning horizons. I understand that SNP doesnot plan anything within SNP production horizon whereas PP/DS plans only within the PP/DS horizon.
Now, I get confused when trying to understand the following sentences:
1. If production horizon of SNP is smaller than the PP/DS horizon, the planning horizons of SNP and PP/DS overlap with each other. In this horizon, SNP determines the receipts with most cost-effective sources of supply and lot sizes and PP/DS plans the receipts in more detail.
2. If requirements within the SNP production horizon cannot be covered by PP/DS, then SNP plans the receipt outside the SNP production horizon(this corresponds to the logic in the PP/DS planning time fence in short term planning).
3. If the PP/DS horizon in the product master is set to be greater than SNP production horizon, this gives rise to an overlapping area in both SNP and PP/DS receipts are created.
Can anyone please help me undestand the above? An example or somedocumentation reference is appreciated.
Thank you.

Hi Visu,
Good question. You missed Planning Time Fence in the equation.
|--||--
>
1.       PTF             SNP            PPDS
You execute PPDS Heuristic (Product Heuristic) then requirements upto PPDS horizon will be covered by receipt elements (beyond Planning Time Fence). If you run SNP Heuristic then receipt elements will be created from SNP Horizon out in future deleting the receipt elements created by the previous PPDS run. But note that while PPDS planning is down to the second level SNP planning is minimum at a day level. If you have weekly buckets then all requirements for one week will be clubbed and single receipt element will get created. However you can consider SNP orders as fixed during PPDS Net Requirement Calculation through appropriate development.
|--||--
>
       PTF              PPDS           SNP
2. This is also not clear to me as I cannot build the scenario as described. The above diagram is the closest I could come up with. But in this case if you run SNP Heuristic and there are unmet requirements (sitting between PPDS and SNP horizon) then the receipt for that will be created only at the start of the SNP Horizon.
3. This is correct but already explained in 1.
Hope this clarifies or at least does not add to the confusion. BTW if you are interested then please read OSS Note 481906 - SNP - PP/DS integration (documentation).
Thanks,
Somnath

Planning horizons of SNP and PP/DS

In didn't understand the below terminolgy , can anyone please explain the meaning of it in detail..
The planning horizons of SNP andPP/DS overlap , if the SNP production horizon is shorter than the PP/DS horizon

Please see the following two forum threads
SNP and PPDS planning horizons
Difference between Plannnig Horizon and Production Horizon
Also refer to SAP Note 481906 - SNP - PP/DS integration for more details (its a pretty lengthy note)
Hope this helps.
Somnath

Planning Procedure and Horizon Auto Update

Is it possible to auto update the planning procedure as (4) and SNP, PPDS horizon (360 days) while CIFing material from ECC to APO.
Is their any coding required for the same?
Regards

Hi,
If you want to maintain same value of horizon for all products, you can maintain this in Model & Version management.
PP Planning Procedure can be maintained using MassD.
If you want to maintain different values of PP Planning procedure and Horizon for each product, you can use ABAP code for this. There are CIF user exits from both APO side and ECC side. This is regular process in almost all projects and developers would be aware of these function modules.
Regards,
Bipin

TP/VS: Planning Horizon

Dear all,
I am facing a problem when I try to optimize a shipment.
The follow message is displayed in the log:
Vehicle CRTA BAU T 01 has unscheduled breaks. This can lead to inconsistencies.
Orders cannot be scheduled in the planning horizon
The best solution found is to not deliver any orders
0 of 1 orders could be delivered
What this message means?
My Optimization Profile is set with a huge planning horizon date:
Start Date:           26.11.2010
End Date:            25.01.2011
Duration (Days) 60
In my delivery:
Requested Delivery Time: From 30.11.2010 To 30.11.2010
Today is 26.11.2010
The duration of the transport: 54:44
What procedures should I take to fix this message?
Thanks a lot.
Thiago

Dear Thiago,
if you check the optimizer message log, you can see the message /SAPAPO/VS367
Diagnosis:
You have maintained breaks without a fixed start time.
System Response:
These breaks might not be supported by the optimizer and they are processed differently by liveCache and the optimizer. This can lead to problems when scheduling the associated shipments.
Please recheck how your Vehicle resource is maintained (from...to...) and also the Break duration. I assume this break was maintained without any fixed start time
Hope this information helps you.
Regards,
Tibor

Planning Horizon Effectiveness

Dear Experts,
Can some one explain me what does the planning horizon in MRP mean?
In OPPQ,we have defined Planning Horizon as 180days.
What I would like to know is that,How this 180days are considered?Whether the Factory calender is considered? whether it is 180 days from the MRP run date or how?
I need to know this as my actual aim is to find out the reason behind the creation of system proposed Planned Orders. The system is considering the newly arriving Purchase orders only if it si scheduled before 10June09 and suppose if it is 11June09 the system proposes a Planned Order for the items.(But 11June is not 180days either from today's date or from the begining of 2009)
Please reply...
Points assured...
Regards,
Bhavin

During MRP you might be using Create Purchase requisition indicator 2 - Purchase requisitions in opening period. if you have set indicator 2 (Purchase requisitions in opening period), the system only creates planned orders for procurement after the opening period. Within the opening period system creates purchase requisitions.
When you select this indicator, the system creates purchase requisitions instead of planned orders when it determines an opening date that is before the date of the planning run

MRP planning horizon

Hello,
One of our businesses has a requirement that planning horizon in MD64 / MD65 be defined once only for the first 3 planning periods. Planning period is in months. They enter forecasts for 12 months. They want that the first time they use MD64 they should be able to make entries for all 12 months. Subsequently, when they are entering forecasts for planning periods they want that entries for the first 3 months from the current date should be locked/ uneditable. For example, on 1 Jun 2008 they enter quantites for the first 3 months as 1000, 1200, 800. The next time independent reqs are defined the quantities 1000, 1200 and 800 should be uneditable. Is this possible? Or is there a way to accomplish this at the initial screen where the planning horizon is entered (by placing a check of some sort on the "from" date so that it must be 3 months forward from the current date). Perhaps some check at the basis level? Any suggestions would be greatly appreciated.
Regards
Edited by: Khan Awkhan on Jun 5, 2008 9:23 AM

Hi,
In Jan first you have created 12 months requirement & ran MRP. So planned order created for all 12 months.
Now change in material master MRP type P1.
Planning time fence - 3 months ie, 90 days.
Again run MRP. System firm all the existing planned orders which are between these 90 days. No automatic changes will happen if you run MRP once again.
If you create new proposal with in this 90 days, system will not change the existing planned orders and new planned order will create after the planning time fence.
P1 function is, with in the planning horizon already existing planned order convert to firm planned order. If any new proposal comes within this period system creates planned order at the end of planning time fence.
Suppose if you run MRP on Feb, system will consider 90 days from the current date. So Feb, Mar,Apr planned order get firm. No automatic changes will happen.
Regards,
Dharma

Planning Horizon Business Content

Hi,
Does anyone know if there is a business content for Planning Horizon for Stock - via transaction MD63/61 ?

Dear Mohd,
there is no standard extractor available for your data , You can use a Generic Extraction on tables PBIM and PBED to get your desired data .
Hope it helps.
Thanks,
Krish

PR is generating beyond planning horizon

Hi All,
We have an issue with MRP.
MRP type-VB / V1
Lot size-HB
Planning Horizon-90
Rescheduling Horizon-100
Recorder pt=100
Max stock level=150
Stock =1130
Requirement= 1300 (Requirement date for 300 quantities is on 01.12.2011)
As requirement is too far still it is creating PR after MRP run, Can you please check?
Not sure whether Planning Horizon will consider for V1 and VB also?
Thanks,
Suhas

I guess that it only creates a PR with V1, not VB, right?
I think that even with V1 it will not if you run MRP in "net change in planning horizon" mode.

System considers dependant requirements lying outside planning horizon

Hello Experts,
Iam running the MRP for procurement. I have defined a planning horizon so that system will consider the requirements of that period. Iam using NETPL as my planning method in MRP. I wanted to create only purchase requisitions during this period so I selected 1 as my creation indicator as well.
But the issue Iam facing is, system is not skipping the dependant requirements which is outside planning horizon. System skips only PIRs.
For all the dependant requirements outside planning horizon, system creates planned orders and for those within plannning horizon system creates purchase requisition. Is there any settings to skip system considering dependant requirements outside planning horizon.??
Thanks
Prathib

Hello
I believe that there is a misunderstanding about what exactly is the planning horizon. Using a planning horizon does not means that the requirements outside the horizon will not be planned.
The planning horizon represents a part of the planning area, where a planning file entry is made for the MRP processing key net change planning in the planning horizon (NETPL).
In this kind of net change planning, only those materials that have undergone a change that is relevant to MRP within the planning horizon are included in the planning run. Such materials receive a net change planning indicator in the planning file.
That means, if an MRP relevant change is made for a material within the planning horizon, the planning file entry NEPLT is set for this material.
You can check in the SAP Help how the planning horizon works, see below:
"You can also use a planning horizon to further limit the scope of the planning run. In "net change planning in the planning horizon", the system only plans materials that have undergone a change that is relevant to the planning run within the period which you defined as the planning horizon. The system sets the net change planning horizon indicator automatically for these materials."
http://help.sap.com/erp2005_ehp_06/helpdata/EN/f4/7d274f44af11d182b40000
e829fbfe/frameset.htm
So, the planning horizon only define is the planning file will be marked as "net change planning".
BR
Caetano

MRP plans sales orders outside planning horizon

MRP plans Sales order for Finished Goods Outside planning horizon even when using NETPL. Strategy 40 is in use with 3 level BOMs. Planning horizon - 200 day. How could it be prevented?

Dear,
Please check have you assigned any MRP group to your material masters in MRP1view? Then check the planning horizon maintain in MRP group in OPPR also check same for your plant in OPPQ.
If you define it as 200 days then system will only plan the requirement which falls under 200 days with processing key as NETPL.
If we set planning horizon as 200 days then in the material in which MRP relevant changes happened in last 200 days will only be planned. Planning horizon is the period beyond it, requirements don't generate planned orders
Please check and revert back.
Regards,
R.Brahmankar

MRP looking past planning horizon?

Dear Experts,
We have a material that exists on a purchase order. The material is a HALB, with MRP Type = PD and
Procurement Type = F (purchased). The Planning Horizon for the plant is 180 days and there is no planning horizon defined for MRP Group. The Purchase Order has a delivery date of 12/31/2009 (well past the horizon). But, Purchase Requesitions are not being created during the MRP run. The MRP settings we are using are NETPL, 1, 3, 1, 3, 1.
It is acting like it is looking past the planning horizon and seeing the purchase order that is far out in the future.
Does anyone have any ideas on what is happening?
Thank you,
Melissa

Hi Melissa,
The 250 days is workdays & not calendar days & hence it is beyond 31/12/2009. This is the reason why the system is considering the PO.
If you're in test system, you can test by increasing the delivery date of the PO say to 31/12/2010 & run MRP, it would create a procurement proposal.
Hope it answers your query.
If helpful award points
Regards,
Vivek

Planning horizon and scheduling horizon

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