Planning Time Fence Value

Hi Team,
I would like to maintain planning time fence value in material master. I do not have any clue that how to determine the value for the planning time fence. Some where i read that the planning time fence value will be the interval time between two MRP runs (ie, if i run MRP four days once, 4 days will be the planning time fence). Is this logic work out? Any guidance to determine the planning time fence for the material?
Thanks

Hi Mariano,
Q1: By implementing Time Fence, you are losing flexibility, so this goes against the service level, so is not going to avoid cutting sales. However, sometimes you still need to use a time fence in order to provide some stability to your supply chain (maximize the use of your production capacity, coordinate the component replenishment with your vendors, etc..).
Your statement is: "By implementing planning time fence, you are losing flexibility".
"Losing Flexibility" means, if there is sudden sales requirement (Eg: Emergency sale order), accordingly the manufacturing plan will NOT be smoothened. Do you mean this as "Losing Flexibility"?
For your information, i am using strategy group 40 for my FERT item. The strategy group 40 will be mainly used to smoothen the manufacturing plan according to the sudden sales requirement. Implementing strategy group 40 & planning time fence together for a material will be AGAINST of each other know?
Coverage Profile:
Your statement is:
Q3: As coverage you can use different methods: coverage profile, safety time, safety stock, etc. The coverage profile is a key that needs to be predefined in advance. I will try to simplify the explanation. Suppose that your coverage profile says that you want to have 10 days of target coverage. If you have a constant forecast of 1000 CS per month and you have 20 working days in a month, this 10 days of target coverage will mean that you want to have 500 CS in excess of your forecast. So the MRP will plan to start the month with 1500 CS (1000 CS of forecast + 500 CS of coverage).
According to you, the MRP will plan for 1500 CS instead of 1000 CS for the month. But for that particular month additional 100 requirement has come as emergency sale order. How to handle this? My requirement is "How to handle (cater) the emergency sale orders effectively in ECC?" Will "Back order processing in SD" can help to cater these kind of emergency cases?
Thanks

Similar Messages

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

MD04 - Planning time fence for materials that are planned externally

Hi,
I have to develop a report in R/3 which will pick up values from MD04 (for a particular material/plant combination) and show the output in ALV grid of materials which are not planned in R/3 but APO.
It should also show the planning time fence.
For example, if i goto MD04 in R/3 and enter a material-plant combination which has MRP type X0 (external planning), it doesnt show me the planning time fence.
This value/row has to be picked up from APO.
Any idea how to go about it and what are the Function Modules I should use or is there any alternative for this ?
Regards,
Anand.

Hello Anand,
Try looking at user exit in MD04 that can change the values in MD04. Then, check for material-plant type of the order. If it is X0, call RFC to APO function module to read the information you want.
I have develop before a report in R/3 that read the correct time of an order in APO to be displayed in R/3.

Internal Transfer, BOD, Planning Time Fence and ASCP Reschedule suggestion

Hi,
we've an ASCP plan with 5 ORG. We've many items with BOD like this one:
BOD of ITEM X:
ORG 1 BUY
ORG 2 TRANSFER FROM ORG 1
ORG 3 TRANSFER FROM ORG 1
Using this rule, we set PLANNING TIME FENCE for Buy items, at about 0,7 * LEAD TIME (from the approved supplier list) in BUY ORG (S01 in this example)
and PLANNING TIME FENCE = 0 in TRANSFER ORGANIZATION.
Sometimes, we release Internal Requisition to transfer item in excess from other organization to organization S01 to avoid Purchase Order not needed. In this case, the plan will suggest to reschedule OUT the internal requisition and if the planning time fence is large, people at the internal shipping department, will not see this Internal Req because they work in short range date.
Furthermore the ASCP plan will reschedule out all the Discrete job and planned order pegged to this suply.
This problem originate because we implement the reschedule out suggestion from ASCP over internal req ( we've a custom for this). How can ve avoid the Plan suggest to reschedule out this Internal Req? Maybe we can use the Profile "FIRM INTERNAL REQ INSIDE PLANNING TIME FENCE?".
Someone know if there are other ways?
Thanks in Adnvance.
Giacomo

Giacomo,
Usually, clients use "MRP: Firm Internal Req Transferred to OE" to keep internal requisitions from being rescheduled by ASCP. This would mean that any IR that has created an ISO would be treated as frim by ASCP. The intent is that since standard ASCP cannot reachedule ISO/IR orders, that you prevent these reschedule recommendations.
Since you have intentionally implemented a customization to cancel/reschedule these orders, this may not work for you.
The other profile option that you suggested; "MSO: Firm Requisitions Within Time Fence" was intended for purchase requisitions. It may work for internal requisitions, but you'll have to test. If it did, it would only work for the organization that is recieving the IR. You had set the PTF to zero (0) in that organization.
I suggest you try the combination of this last profile option with a PTF value that you do not want to see any reschedules.
regards,
Kevin

PLANNING TIME FENCE and RELEASE TIME FENCE

Hi, I am on ver 11.5.10.5. We are using MDS and MRP here.
Trying to understand the right meaning of planning and release time fences , so that I can define the right time fences in the item attributes.
My cumulative manufacturing lead time for top assembly is 12 days. Should this be the planning time fence.(12) ?
Time taken to run MRP (1 hr) and manually release all planned orders to PO or WIP is 4 days. So should 4 days be the release time fence. Auto relase feature is not being used.
Am I on the right track here , or is the track totally missing?

James,
The Planning Time Fence is the point that you want no new planned orders to be created prior to. In MRP this was based on the suggested dock date for (buy) orders and suggested due date for (make orders). Whatever you set the value to, no new planned orders will get created earlier than date.. even in an unconstrained plan
So as a practical point, how far ahead do you want to create your WIP jobs? If you are creating WIP jobs now for next week and your build LT is 5 days, you may want to be a user define value of at least 5 days. This would put the suggested due date of the planned order on day 6 (5days + today), the suggested start date would be today. You can also add a pre-processing lead time to make the suggested order date earlier and monitor that value. I would test these, understand the attributes and the resulting dates and determine the right value.
The Oracle ASCP User Guide has a good description of lead times that you should review on page 6-90. Most of this information is the same as old MRP, but some has changed. You can also review the inventory user guide to get a description of these attributes.
If auto release is not used, the auto-release item attribute is not used.
Regards,
Kevin

CIF - planning time fence

When planning time fence in R/3 MRP1 is Zero, it does not reset the value in the PPDS tab in Product master after CIF. Do you need to maintain any default settings.

Dear
Vaidyanathan Shanker
Please go through the note no<b> Note 734360 - Planning time fence not getting transferred to APO.</b>
its the exact your issue. The issue you are getting is not a bug, but kept by SAP as a functional requirement.
pravin mukkawar

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.

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.

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

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

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

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

HELP: Planning Time Fence Control

Hi,
We have a business requirement where we have Firm Purchase Orders and WIP jobs outside the planning time fence (PTF). We then have new demand for the item coming from SO. When we run MRP, the system is extending the planning time fence up to the Need by date of the latest PO so this means there will be no stock to cover the new demand and we are in backorder!
Example:
Item: ABC
Item Leadtime: 5 days
PTF: 5 days
Sysdate : 09-Feb-2009
Firm Purchase Order: 20-Mar-2009 (outside the PTF for the item)
WIP job demand: 20-Mar-2009
New SO 5000001252 with schedule ship date 17-Feb-2009
To cover the demand for SO 5000001252 MRP is suggesting a new planned order for 20-Mar-2009.
Plan option:
Profile MRP:Firm Planned Order Time Fence = No
Overwrite = None
Append Planned Orders = Yes
Planning Time Fence Control = Yes
Has anybody come across this scenario? How can we force MRP to suggest a Planned Order for the 17-Feb-2009?
Can the above requirement be achieved with ASCP?
thanks

Hi
I guess planning is creating time fence on its own called the natrual time fence. It would take the firm supply and create a timefence based on its date until creating new pl order within that period.
Please set profile MRP:Create Time fence to No and recheck
Best regards
Partha

Planning Time Fence Value

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