Diff. bet PLANNING TIME FENCE & PLANNING HORIZON

Hi all,
whats the diffrence between , planning time fence & planning horizon ?? where it use ???

time fence - like a fence beyond with in which some changes are not entertained.
horizon- will tell the system not to consider some requirement if the requirement date lies outside the horizon.
Horizon is defined at plant/mrpgroup/mrparea level
Time fence is defined at material level.
Fence is usually used in MPS scenario where in some special very important materials are considered and any changes may affect the company profit.
with time fence- i can make the system not to consider the change with in the fence, with horizon system considers the change with in horizon, not outside.
I hope now you are clear about the application of it.
reference thread = Difference between PTF &PH

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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

Difference between Stock Transfer Horizon and Planning Time Fence

Hi Experts,
Could you plz help to explain the difference between stock transfer horizon and planinng time fence?
Appreciated your professional input to address my confusion.

Hi Gavin,
The stock transfer horizon is used in SNP planning, it is the time period within which SNP does not create any stock transfer requisitions.
The planning time fence is used by PPDS planning. It is the time period within which the PPDS planning does not create any orders. The orders lying within this period are considered to be firmed by the PPDS planning.
Functionally, the stock transfer horizon/ production horizon in SNP are analogous to the planning time fence in PPDS, which provide the system ability to keep the plan firm/unchanged within this period.
Hope this helps!
Regards,
Umesh

Exception message 56 "shortage in planning time fence" meaningless

Hi,
I would love to use in PP R3 this message 56 "shortage in planning time fence" to detect as a matter of priority the situations where planned orders are too late or too small to meet demand and a planned shortage exists.
But this message seems to be generated only in the case of planning type M2 and M4, not M1 or M3.
Also the result wont be the same if I use a coverage profile or a safety time with both the same minimum stock coverage.
And SAP put the exception on a forecast or customer order at a date when there is actually no planned shortage : there is enough stock to meet the demand.
I would like to know if you found the same anomaly in SAP and how you work around this.
thanks in advance for answers.
Oliver

Hi Manjula,
Planning time fence is the time period in which system will not disturb the current plannng situation .
The duration shown the MD61(selection screen] is the planning horizon. If you enter any date outside the planning horizon system will issue a warning message indicating the same.
Thanks & regards
Mahesh
Reward points if useful

Firmed planning time fence

Hi gurus,
My business scenario is to firm my planning shop flloor during 60 days.
To do it I used the planning Type P1. So If there is a requirement during these 60 days the planned orders is proposed at the end of this time fence. But this is the requirement date that is defined out the time fence. I have to begin the production (and so change the shop floor planning) during my firmed time fence of 60 days to respect the planning proposed by MRP.
Is it possible to achieve my scenario ?
Thanks.

Hello Laurent,
If I've well understood what you want :
you would keep normal run of P1 for any planned orders which cover a requirement inside the planning time fence, and in the same time, you would get new proposals from the MRP in the planning time fence if the requirement date is outside the planning time fence.
In this case, it seems me to be a bit difficult.
The planning time fence is done to take in account the procurement proposal and not the requirement level. Basically, it's firmed the production plan in a defined horizon whatever the requirements could be.
In anyway, we could imagine a specific program which runs after the MRP with these internal steps:
. selection of the planned orders which have been rejected outside the planning fence,
. filtering the selection against the requirement date (keep the date outside the planning time fence),
. changing the start date of each good planned order and firming it ( & setting an opération code ).
In my opinion, technically speaking, the bolt-on is very simple but the impacts on the MRP process has to be evaluate for the final users (understanding and maintenance). Moreover, there is the difficulty to determine the requirement origin in some context.
I hope to be helpfull,
With regards,
François-Robert NICLOT

Firmimg the orders and planning time fence

Hi, Pls explain about firming and non-firming and planning time fence while running mrp or mps?what is meant by firming the orders? i do not know how it work and how can we interpret the reults? pls explain with one example.

Firming: When an order is firmed , indicates that the Order no longer needs to be planned in MRP.
Order gets firmed, when we change plannde order manually and save .
Planning time fence: the time period during which if any Order comes it gets firmed subject the Compatible MRP type.
Depedning on whether they need to be firmed or not and when a new requirement is creatd in the planning horizon, How the receipt needs to be planned within the Planning time fence or out side is controlled in the MRP type.
Regards
Ratan

Firming logic of planning time fence

Hello PP experts,
I have a question about the firmming logic of planning time fence, based on the test of mine, the firmming date will consider the available date.
For an example, GR processing time = 10 days, MRP type = P1, planning time fence = 5 dyas, today is Mar.10, and after the MRP run, if a schedule line GR date is Mar. 12, but the AV date is on Mar.22, then this schedule line will not be firmed, cause it considers the AV date.
So my question is , can I firm the schedule line according to the GR date but not AV?
Further more, why I use the GR processing time, because it can distingush the delivery date and the arriving date, since this purchasing part is an Ex-work part. Our user wants to know what is the date user pick-up the goods from the port. Useing GR processing time can display the pick-up date. Even though the GR time is a plant internal disposing time. So if anyone has a good idea that where can I put the transportation time in order to let the MRP run can consider the time difference, that will be better.

For the planning run, the firming type determines how procurement proposals are firmed and scheduled within the planning time fence. There are the following firming types:
Hi,
It depends on the MRP type selected. and the Firming type maintained in the MRP type.
If the Firming type is
0
Procurement proposals are not firmed automatically. No firming takes place with this firming type.
1
Procurement proposals within the planning time fence are firmed automatically as soon as their date is at least one day before the end date of the planning time fence. The date of new procurement proposals created in the planning time fence is moved to the end date of the planning time fence. As a result, these new procurement proposals are not firmed.
2
Procurement proposals within the planning time fence are firmed automatically as soon as their date is at least one day before the end date of the planning time fence. No new procurement proposals are created automatically within the planning time fence; that is, the shortage situation is not adjusted within the planning time fence.
3
Procurement proposals within the planning time fence are not firmed automatically. All procurement proposals required to cover the requirements are moved to the end of the planning time fence.
4
No procurement proposals are created automatically within the planning time fence; that is, the shortage situation is not adjusted within the planning time fence.
Hope it is clear
regards
Ratan

Managing planning time fence ( P1 MRP type ) and firm zone in ME32L

Hello,
I want to know if there is or are some documents to know how to manage planning time fence in MM02 and firm zone in ME32L ?
For me, in ME32L the firm zone is the firmed quantities sent to suppliers but not firmed for MRP so how to manage this easily ?
Thanks.
Romeo.

Dear,
Firm ZOne in SA, says that that much qty will be procured from that vendor with in that date specified, if not taken the production cost and cost related to that will be paid.
Now the planing time fence, is the time with in which no change is allowed. Hence if there is any new requirement to that RM, then it will be pushed to outside the time fence.
Hence if there is a schedule line which is already there and requirement is coved with in that, then your requirement is met, if not system will create a new schedule line in the trade off zone/planning zone.
I hope you got the point.

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

Scheduling Agreement & Planning Time Fence

Hello,
I read a lot of articles on Planning Time Fence and the MRP Types P1 to P4 that goes with it. And I have tested it out in a Testing Environment.
But I can't get it to do what I need.
This is a normal planning with no PTF and MRP Type PD.
Sometimes we have false requirements that show up in the past due to human error. When this happens, MRP rolls during the night and adds a bunch of deliveries in the past to cover the requirement.
I wanted to use the PTF to prevent this. Meaning that extra deliveries would get added by MRP but after a PTF and not Firm deliveries. So that once the error is corrected, MRP rolls again and deleted all the extra deliveries it added.
** Only P2 and P4 adds deliveries after the PTF, but I need it to act normal on a day to day basis aswell and have MRP create deliveries like the print screen above. To add non-Firm deliveries after the PTF is just in rare cases of human error.
Not sure if my explanation is clear.
Patricia

Hi Patricia,
The planning time fence is there to stop MRP from making changes to requirements that fall within the planning time fence.
Your planning time fence is a rolling period which shifts by 1 day each day and is calculated as of the current date. Yesterdays date is passed so it would not make sense for a planning time fence to use a date in the past to start it's calculation.
Everything that falls before the end of the planning time fence will not be changed by MRP and you will see that all these schedule lines in MD04 will have an * assigned meaning they are firmed for MRP.
If you manually add schedule lines in the past, the planning time fence will not stop you from doing this. The planning time fence will only stop MRP from making changes.
By the way:
If you manually add requirements to the scheduling agreement then MRP will never change these requirements as these are fixed requirements.
If your customer would add requirements in the past or you add independent requirements in the past and your current stock does not cover the requirements the system will generate schedule lines and will put these directly after the planning time fence with an exception message assigned to them.
As a side note:
I always wonder why such questions arrive in the forum as this is something that can be very easily tested in the test environment.

Planning time fence and MRP question

Good morning,
We have the following requirement:-
1. We want the Planning time fence to move once a week (by 1 week)
2. If we have a schedule line at the end of the Planning time fence, we want this to move inside the planning time fence (as per step 1)
3. Put a fixing indicator on anything that falls into the Planning time fence (as per step 1).
Thanks in advance

mm

Planning Time Fence and Rescheduling Purchase Req

How to Process the MD04 exception u201C30 Plan Process According to Scheduleu201D for Purchase Req.
Please provide me a Step by step procedure with example to Reschedule the Purchase Req with given rescheduling date.
*Really I am confused with PLANNING TIME FENCE.
What it does with Planned Order and Purchase Req ?
Based on the some of threads in SDN, I couldnu2019t come to the conclusion of the terminology behind PTF.
So could you please provide me an explanation with example will make clear idea on PTF.
Thanks in Advance.

dear friend,
as far as i know, all planned orders that lie in the planning time fence are firmed. that means that they can no longer be changed automatically by the system in the planning run in long-term planning.
outside the planning time fence, the system creates order proposals as usual according to the shortage quantity and the lot-sizing procedure. once these planned orders move into the planning time fence, they are automatically firmed depending on the how you have set the firming type.
the planning time fence can be defined per material in the material master record or via the MRP group.

What is planning time fence

in material master we enter planning time fence & in house productiton & plnd delivery time
explain wirh a example

planning time fence: basically it is the period in which no changes to the plan happens automatically through MRP run
inhouse production time: the time required to produce a material in calender days
Pld delivery time: time required to procure a material if it is procured externally.
the latter 2 values are of significance in scheduling the delivery dates. inhouse production time for the product and PDT for the components(sourced externally)
please explore further in the following link
[http://help.sap.com/saphelp_erp60_sp/helpdata/en/f4/7d3f9344af11d182b40000e829fbfe/frameset.htm]
get back in case u need more details

Planning time fence- MRP

Hi Guys:
Can I use Planning time fence if i am using MRP type PD?
what are the settings i need to maintain for planning time fence and how it defined generally , is it a function of leadtime?
Thanks
Kodali

Hi Padmasri :
How to freeze the order proposals if i am using MRP Type PD.
Because , I might run MRP Yesteraday it might have created Planned orders or Purchase requistions and Buyer might have issued purchase order to the vendor.
today i got some more sales order and additional requirements , So when i run MRP today System propose Purchase requistions asking to change the previously created requistions on Previous Run?
Could you explain how to manage this scenarious without timing fence and still using MRP type PD?
Thanks
Kodali

Link Planning time fence with planning calendar

Hello,
In MD04 transaction, we can see the planning time fence lign. In my system, the planning time fence lign is calculated based on the plant calendar (SCAL transaction).
But, we will like to calculate the planning time fence based on the planning calendar (MD26 transaction) and not on the plant calendar.
I mean, when I close a period in the planning calendar (MD26), I want that the system establish the new planning time fence lign based on the planning calendar.
Does anyone know if it's possible? If yes, how should I do ?
Best regards,
Gwen

Hello Gwen
The planning time fence is always calculated according to the factory calendar defined at plant level.
If you are using a periodic lot-sizing procedure with a time fence, system may generate replenishment proposals outside the planning calendar dates, especially if you are using a goods receipt processing time. If you want to make sure that the dates will be always according to the planning calendar, you may check the following modification note:
397870
MOD:Procurmt propsls on non-dely date due to plng time fence
If you want to create your own logic to calculate the time fence, you may use the BAdI MD_MRP_PARAMETERS.
BR
Caetano

Diff. bet PLANNING TIME FENCE & PLANNING HORIZON

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