Planning time fence with Lot size MB

Hi Friends,
I am facing one issue as below,
I am using MRP type P3 , Planning time fence is 20 days , Lot size is MB (Monthly). I am not using MRP group.
Planning time fence should be calculated as Todays date+Planning time fence on MRP1 but if the calculated date with this formula is going in next month system takes first date of next following month as Planning time fence (effect of lot size MB).
WIth lot size EX , it works fine.
Can we avoid shifting of Planning time fence to first date of following month with lot size MB?
Thanks.
Sandeep

I got a workaround , I have used 2 lot sizing procedure in a sigle lot size. Daily lot size (for Short term) and Monthly lot size for Long term. For short term requirements are grouped for 28 days. Closing the thread. Thanks.

Similar Messages

Planning time fence and Lot size

Hi,
MRP type=P3, Planning time fence=28 days, lot sizs=EX and all 28 days are working days.
so today =05/112009 and i check the MD04 End of planning time fence is 03/12/2009
But when i change the lot size to =ZC(3 Months lot size) keeping the rest all same as above.
and when i check MD04 The planning time fence moved to 01/01/2010
What should be done to keep the planning time fence as 03/12/2009 and i don not want to change either MRP Type or lot size
Regards
Praveen

>
Praveen Arvapalli wrote:
> Hi,
>
> MRP type=P3, Planning time fence=28 days, lot sizs=EX and all 28 days are working days.
>
> so today =05/112009 and i check the MD04 End of planning time fence is 03/12/2009
>
> But when i change the lot size to =ZC(3 Months lot size) keeping the rest all same as above.
>
> and when i check MD04 The planning time fence moved to 01/01/2010
>
> What should be done to keep the planning time fence as 03/12/2009 and i don not want to change either MRP Type or lot size
>
>
>
> Regards
> Praveen
Praveen,
I think your Lotsize Indicator is based on Planning Calendar. Please check the period definations of the planning calendar assigned to the material in the MRP2 view.
Regards,
Prasobh

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

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 Use with MRP

Hi,
I was wondering if planning time fence has use with an MRP type without a firming type. Basically, SAP says it is only used with the MRP contains a firming type. However, i thought the planning time fence is also used with SAP. For example, i can tell MRP to only plan materials outside of the planning time fence. Anyway, just looking for further insight or clarification.
Thanks, Erik

for automatic firming ,
you need to maintain a MRP type related to firming , while running MRP , system will firm the order with in the planning time fence, & based on the firming type, any new requirement system will plan according to the MRP type
Firming type 1- P1 or M1. The date of new order proposals that are actually created in the planning time fence are rescheduled out to the end of the planning time fence. Therefore, these new order proposals are not firmed.
Firming type 2- P2 or M2: The system does not create any new order proposals within the planning time fence. That is, the shortage situation is not adjusted within the planning time fence.
Firming type 3- P3 or M3: Order proposals that lie within the planning time fence are not firmed automatically. The order proposals required to cover the requirements are moved to the end of the planning time fence.
Firming type 4- P4 or M4: Within the planning time fence, the system creates no order proposals automatically. That is, the shortage situation is not adjusted within the planning time fence.
Manual firming
you can firm the planned order in MD12

Defining planning time fence and creation indicator with out oppr settings

Hi, we dont use mrp groups and accordingly i did not set oppr settings. i observed that planning time fence and the creation indicator (omdz & oppr) are defined thru mrp goups. please advise how to define those w/o oppr settings? is there any seperate settings or oppq settings for them? please advise.

Hi,
Maintain it directly in the Material Master.
Best Regards,
Siva

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.

Setting up the Planning time fence

We have a material that is set to MRP type P1 and WB lot size,
I have the following scenario: -
The planning time fence is currently on the 19th (Monday)
We have negative stock inside the planning time fence
I have run MRP and it has created Planned orders on the 19th to clear the negative stock.
So my assumption is that on Monday morning the Planned orders will be INSIDE the planning time fence.
The planning time fence will have moved to the 26th (Monday).
Will a daily MRP run effect this (NETPL and Adaptive Planning)?
Thanks in advance

Hi Guy,
The Planning time fence is given in number of working days.
So when you increase the time fence, naturally it includes the present
time duration.
Regards
Krishna

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.

MRP with LOT SIZE as "MB"(Monthly Lot Size)

Dear All
When I am Running MRP with LOT SIZE as "MB" (Monthly Lot Size)
System Is raising Planned Order,
My requirement is instead of Planned Orders I need system to raise Purchase Requisition
Regards
Chaitanya

Hello ,
It is because of the procurement type "X" in MRP 2 view of material master . IF you change it to "F" , your problem will be solved
Regards
Ramesh

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

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

MF50 : Planning table and planning time fence

HI,
I use the transaction MF50 as planning table ( in order to do my MPS planning), I use "set firming date" to fix a firming date.
Now, I want o know if it should possible to reveal a message when we create a planned order within the firming date??
Thanks for your answer.

Hi,
For clarity , I am describing below the functionlity of Set Firming date is explained as below:
By setting Manual Firming date , we extend the planning time fence.
If a planning time fence has been created for a material then the following applies:
If the manual firming date lies before the end of the planning time fence, the planning time fence is still valid.
If the manual firming date lies after the end of the planning time fence, the planning time fence is extended until this date.
All order proposals with availability dates that lie before the end of the planning time fence of the manually extended planning fence are firmed for the planning run, if the materials have an MRP type which contains firming type or firming type 1 or 2
The system does not automatically firm order proposals for materials that have an MRP type with firming type 3 or 4, even if their availability dates lie before the end of the planning time fence or manually extended planning time fence.
Please check if this helps you.
Regards
Datta

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 time fence with Lot size MB

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