What is planning time fense in simple words?

what is planning time fense and demand time fense?

Hi
       This concept is used for master production schedule items . Which are A class and any planning change for these components might affect company adversely .
Now this is provision to lock or restrict the plan from changing .
Depending upon your setting in material master m1, m2 , m3 etc and planning time fence it will firm the planning proposal and any new requirement will be shifted at the end of the planning time fence .
In MD04 you can see the proposals created and shifted at the end of planning time fence . ( depending on your settings )
IN Simple words it is time within which no automatic changes will be made and your MPS planned will be saved .
If satisfied , please reward and close .
NeaL .

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

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  • 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

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  • 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.

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  • In Material Master Screen,functionally what is Safety time and safety time

    In Material Master Screen,functionally what is Safety time and safety time indicator in the MRP Screen.Pls explain its functionality

    Hi,
    The safety time / actual range of coverage ensures that the planned warehouse stock covers the requirements of a defined number of days. It therefore serves as a time float and thus works alongside the safety stock, which acts as quantity float.
    The system simulates bringing the requirements forward by the specified number of days and the planning for the receipts, created for these requirements in the planning run, is also brought forward by this number of days.
    Prerequisites
    ·   You have set the Safety Time indicator in the material master record (MRP 2 View) to define whether the safety time is only to apply to independent requirements or to all requirements.
    ·    In the material master record (MRP 2 View), in the Safety Time/Actual Range of Coverage field, you have entered the number of workdays by which the requirements are to be brought forward.
    ·    If, in addition to this actual range of coverage, you also want to define a different number of workdays in certain periods or a safety time less than one day then, in Customizing for MRP in the activity Define Period Profile for Safety Time/Actual Range of Coverage you can define a period profile and assign it to the material in the material master record.
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  • Not to include Transortation Planning time

    Hi,
    For made to order items where the MAD comes out as far into the future, we do not want to take the tansportation planning time (may be 3-4 days) to run in addition to the other times to confirm the delivery date (makes  no sense as we can to this planning concurrently and thus improve the service). For stock orders, yes, we have no choice to include it as the order came in when the stock was already there and we have to use trans. planning time to plan the trucks.
    Is there a way to avoid adding this time for trans. planning to the ATP times for made to order stocks wherein the total lead times are more than the trans. times anyway?
    Thanks a lot.

    Hi Roberto,
    Unfortunately, the order type is the same - depending on what is in stock or is a made to order (and in the latter case, if the MAD is more than the transportation planning time, we want that TPT to be included in the MAD i.e. to overlap to save time else it would get added to the total time by itself to give an ATP date more than what we can manage well - just a customer experience/service issue)
    Thanks,

  • 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.

  • 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

  • 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.

  • 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

  • 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

  • Planning time Fence and  Firmed Planned Orders

    Hi,
    Withing our 30 days planning time Fence, MD04 is showing * mark against the planned order, but when we drill inside the planned order, Firming indicator is missing.
    Using M1/ P1 MRP type.
    1) Is this a correct oservation?
    2) How does it affect the availability check, if we are considering Firmed Planned order to be included in the Av Chk. Will this planned order be considered with the Availability check?
    Thnx!
    Abhi.

    Dear,
    Let us understand with an example
    MRP type = P1
    Time fence = 30 days
    Let say you have created 3 requirements
    01.12.2007 - 100 TO
    01.01.2008 - 100 TO
    01.02.2008 - 100 TO
    Let me know what are you expecting the syatme to do if you run MRP  today?

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