Weekly lot size

Hi,
Want to plan material based on weekly lot size. However, am working in a region where week begins on saturday and ends on thursday with friday off.
Have tried maintaining a planning calendar for the same and used lot size PK.Also, have maintained the factory calendar accordingly but, the system does not give desired result.
Am I missing something?
Tarang

1. In Factory calener in spro, use No. first workday as 5 (i.e Saturday)
2. Have you updated the new factory calender in the Plant.
3. In Planning calender , Period begin on following weekday = 6- Saturday
4. have you updated Planning calender correctly in material master
pleae check

Similar Messages

Lot Size "WB - Weekly Lot Size"

Dear All,
I have selected lot size "WB - Weekly Lot Size" for a material.
The Planned week start day is Monday in planned calender.
If i run MRP for the above maintained material it is not flowing the requirment and it is not combined on Monday, it is throing on Tuesday, Thursday and all the other day including MOnday also.
Why is this system is not throwing correctky the requirment on every MOnday.
Is there settings need be done to get this.
Your valuable answer will be appreciated.
Regards,
Nagaraj S

Please read SAP online help:
http://help.sap.com/erp2005_ehp_04/helpdata/EN/f4/7d282c44af11d182b40000e829fbfe/frameset.htm
Please check your settings in SPRO:
SPRO > Production > MRP > Planning > Lot-Size Calculation > Check Lot-Sizing Procedure
...here you can check "Scheduling" field (V439A-TERBV) of lot size "WB". And you can check also field V439A-LGTER.
F1 help for the field:
Scheduling for period lot sizes in short-term area
This indicator defines the time in the period the system is to create the availability date or the start date for the lot for period lot-sizing procedures.
The availability date is the date on which the material, including the goods receipt processing time, is available again. In the MRP list, the availability date is equal to the MRP date.
In in-house production, the start date is the order start date, in external procurement the start date is the release date.
The following procedures exist:
Availability date equal to requirement date
Availability date at period start
Availability date at period end
Start date at period start
Planned order start date at period start and availability date at period end
With this setting, the in-house processing time in the material master record is ignored.
Note
The following is valid in all cases:
If the start date lies in the past, the system switches to forward scheduling. The following example illustrates how the system procedes:
The period start is Monday and the period end is Friday. The planned delivery time is 8 days. The indicator for determining the date is set to, "availability date at period end".
Today is Monday, a requirement is planned on Wednesday. The system has to schedule forwards. As the system works using date determination, today's date is not selected as the start date. Instead, the system determines the next period end, and uses backward scheduling to calculate a start date that does not lie in the past. This means that the end date was planned for the Friday of next Week.
Edited by: Csaba Szommer on Aug 5, 2010 9:32 AM
Edited by: Csaba Szommer on Aug 5, 2010 9:35 AM

Weekly lot size configure

How can i configure the weekly lot size which should plan the matrilal in the week days not at the start of the week .
as per my knowledge if it is weekly then As standard the system tries to schedule the receipts for the first requirements date in a period for the weekly lot size (WB).
for WB (weekly lot size ) it will not accept the other lot size in the customization.
Plz let me know
Regards
piyush

Hello sir ,
Thanks for the reply ,
The requirement is a new lot size like WB, but the End of planning time fence (10days ) should not be rounded to the start of next week.
actually our client wants to use the Planning time fence 10 days & total replinishment time 10 days for the material & that should consider in the planning the material & in the MD04 screen also it should look with the same date .
i have mentain the planning time fencce 10 & total replinishment type 10 days but when i see the md04 it is showing the differant dates to me
example from todays date for
todays date 31.04.2009 (5 day working as per the factory calendar)
19.04.10 -- end of time fence
If i want "End of planning time fence" date is same like "End replenishment lead time.
14.04.10 -- end of replinishment time
14.04.10 -- end of time fence
how i will achive this .
I have used the material with firming type but i am not able to see the the replinishment time in the MDo4 as mrp element as a .
please provide me a details .
Thanks in advance
regards
piyush
Edited by: PiyushY on Mar 31, 2010 4:25 PM

Weekly lot size calculation with scheduling lines

Hi,
We are using WB = weekly lot size calcultaion for purcahsed material.
We are also using Scheduling agreement and MRP is creating schedule lines automatically, but it does not take into account the weekly lot size.
If we have three different requirements coming from different end products for same week, but different date and then we run the MRP, SAP will create three different schedule lines for the same date. Is it possible to configure system so, that it will create one schedule line in that case?
Regards,
jaana

Hi,
We are using rounding profile and minimun lot size from the Quota arrangement. Roundings seems to work fine.
Which plant parameters you mean, I have check the MRP plant parameters, bur is there some point which will effect for the gouping?
Thanks and regards,
jaana

Lot size

The parents material lot size is fixed lot size , child component lot size is 2 week lot size. ( ie. 2 week = 10 Days ).
question:
If the demand for parent material in month,after MRP run the dependent requirement for child component also getting generate only one planned order.
What are the possibilities if the parent demand in month, child requirement is needed in weekly basis .Any chance to get the child requirement in weekly by changing lot size or any other possibilities.

Hi,
Thanks for your answer. if we change the lot size for dependent material to weekly , biweekly or fixed etc....
The dependent req. will generate according to the lot size that is absolutely correct. but planned order or purchase req. will create according to the parent demand (ie .Adding of dependant req. what ever falling with in the lot size period and for that quantity planned order or purchase req. is getting created )
Actually my requirement is for the each dependent requirement one planned order should get generate .

MRP Lot Size Difference

Hi All
In OMI4 ie. MRP lot size procedure i see several MRP lot sizes i.e. EX, WB etc....
But only major difference i find is in terms of scheduling i.e.
Blank (Requirement date = delivery date), 1 (period start = delivery date), & so on i.e. 2, 3, 4
Can anyone tell how it works?????? What is its significance
Example would be very good for me
Please suggest
Rgds

Hi Vicky,
Requirement date = delivery date
Planning or procurement proposal will create on req date
Period start = Delivery date
Planning or procurement proposal will create on period start.
ie, if you use period lot size WB,MB.
WB means weekly lot size ie, on Monday cumulated requirement will create for that week. Same for MB, month end planning proposal will create.
Period End = Delivery date
ie, if you use period lot size WB,MB.
On Saturday cumulated requirement will create for that week if you use WB. Same for MB.
This concept will not work if you use planning time fence.
Regards,
Dharma
Regards,
Dharma

MRP net requirement calcualtion for Lot sizes

Hi all ,
Can some one help me on this ..
I want to set up the MRP for the Raw materials Procurement .
for this i want use MRP type as PD and lot size as WB Weekly lot size .
but as per the requirement the MRP is run daily , i need clarification on certain things such as how does the system calculates the weekly lot size ? say if the requirement is converted into PR on the first day of the MRP run ,followed by that if the requirement varies does the system creates a new PR or it changes the Qty in the existing PR if its was not converted to PO .
what are the stock types considered during PR creation and how are the delivery dates determined during the PR creation ?
thanks ,
ksr

Hi Chris
You can try to set up a maximum lot size and a takt time on the material master.
Take a look on the F1 help of this field on the material master:
Takt time
If a requirement quantity (for example, for capacity reasons) cannot be procured in a single lot, you have to schedule several receipts. In conjunction with the overlap indicator in the lot size (set in Customizing for the lot size), you can use the takt time to specify that these receipts are offset, that is, that they are delayed by the takt time.
You enter the takt time in workdays.
Use
The system uses the takt time if a requirement is covered by several receipt elements due to restrictions on lot size such as maximum lot size (with all lot-sizing procedures) or rounding value (with fixed lot size with splitting).
BR
Caetano

Lot size key

Hi ,
In one scenario , it is required that planned prders will be created where the req for 5- 8 days is clubed together and order date is not created on some specific day .
Will lot ize key help in this regard .
Regards
ShankarR

Hi,
Connect the planning calendar to your lot size key
First, you will need to set up the planning calendar.
Menu path: Production -> MRP -> Master Data -> Planning Calendar (MD25)
You will then need to use this planning calendar (the one you created) in the material master when planning your raw materials (MRP2 View in 4.6C - Field name : Planning Calendar).
1. When you maintain the planning calendar you will need to enter a valid from date and valid to date.
2. Your periods will also need to be set up and they will be weekly, for example:
    From Date : 11/23/2001    To Date : 11/29/2001   (11/23 is a Friday, this is your from date).
    Do this for as may weeks as you wish (say weekly for 2 years).
3. When you have set up the planning calendar, you will then need to make some changes to the weekly lot size configuration
    (WB), or you may need to create a new lot size key if you do not want to change 'WB'. Essentially, you will need to use the
    following in the lot size configuration (OMI4) :
    No. of Periods : 1
    LotSizeProced.: P
    LotSize ind : K
    Scheduling : 1

'Start of Lot Size Grouping' and 'Lot Size Strategy' parameters

Hello,
For "by period" lot sizing procedure, could anyone explain the difference between:
- "Start of Lot Size Grouping" flagged with "Lot Size Strategy": 1
- "Start of Lot Size Grouping" flagged with "Lot Size Strategy": blank ?
I have played around with both options and both produced the same result. If anyone could provide some insight , I would appreciate it.
Many thanks in advance.

Hi Datta,
Thank you for your help.
You indicated that the "The first period of the grouping horizon can be different than the period in which demand exists".
How would the first period be different? What other elements could be considered for the start of the horizon?
For example,   Periodic Lot of 4 weeks, Lot Size Strategy 1 or blank and Start of Lot Sizing Group Flagged produced the exactly same result. What is interesting about it, is that with Lot Size Strategy "blank" the group production quantity is placed in a bucket where there is no demand. The results with Lot Size Strategy "1" makes sense as I have the grouped quantity placed in a bucket where I have shortage due to Safety Days requirement and not necessarily demand.
                             w1     w2     w3     w4     w5     w6         w7            w8
Total Demand     125     42     42     41          110     37     73
Production (Planned)     223                    244
Days´ Supply     58     53     48     43     58     53     48     43
Safety Days´ Supply     43     43     43     43     43     43     43     43
Any thoughts? Many thanks in advance.

Combination of Fixed Lot size and Period lot size

Dear all
I have scenario as follows:
1. My supplier's standard packing size of a raw material is 1000 EA.
2. I want to follow period based lot size to optimise my order and inventory cost. But I don't want to use dynamic lot size which will propose dynamic quantity.
So my requirement is like I want to fix lot size as 1000 at material master and Period is Week. My proposal quantity must be 5000 EA for the following demand pattern:
Week 1:1200
Week 2: 1000
Week 3: 1100
Week 4: 1000
System must consider period as well as fixed quantity.
Kindly throw some light on this.
Advance thanks.

Hi
1.As you are looking for Weekly demand demand quanityt , you have to assign Weekly Lot Size : WB.
2. Goto OWD1 and Create a Rounding Profile which will rounds into Weekly Demand quantity for that plant and simulate .
3.Assign this rounding profile in MMR in MRP1
3.DO NOT assing rounding valu as 1000 .Rather keep it blank
Hope this will solve the problem
Regards
JH

MRP lot size to WB

Dear All,
Despite changing MRP Lot Size to WB (Weekly Lot Size), MRP result continues to show monthly lot qty for both IndReq and PurRqs. I am expecting to see WEEKLY lot qty/size instead. Please clarify if by changing to WB (Weekly Lot Size), should users see weekly qty per month?
Amit

IN MD61 or MD62
Enter the period and enter Planning period as W - week and enter Week wise Plan
IF U have only Monthly plan
Then Maintain planning period as M - Monthly
and enter
after entering the month plan in the period
go to schedule line tab
With respective to monthly plan enter W in split
system will split the monthly plan into Week

MRP Type P1 & Lot size PK

Dear All,
This is REM scenario,
Client is going scheduling agreements
material master Settings
MRP Type - P1
Planning time fence - 10
Lot Size - PK
Procurement type - F
GR Processing time - 2 days, No plad delevery time maintained.
in planning calendar we are going with only one day as Friday
and we made previous day is working day if friday is holiday.
After MRP system is proposing dates for schedule lines as
16/06/2010 ( wednesday ) Rescheduling date as 07/06/2010 ( Monday ) ( Rescheduling in i.e 10 )
How system is proposing this dates
Please share your views or if required more info then revert back
i cannot upload Docs as my company policy is not allowing
Regards
Madhu

Hi ,
Bring process forward (reschedule in)
Within this rescheduling horizon, the net requirements calculation checks whether, after a requirement, a firmed receipt exists, which can be used to cover this requirement. Then the system displays a rescheduling date as well as the exception message Bring process forward for this receipt. The net requirements calculation then uses this receipt and the system will only create another procurement proposal if the receipt quantity is not sufficient to cover the complete requirement. Several firmed receipts can be used to cover one requirement.
It does not take in to account the GR processing time and it is purely based on the stock requirement date , parameters in Procurement and Scheduling in the Material Master
So it will consume the requirement backward scheduling and bring the Process forward.
Kumar which strategy are you using ? scheduling agreement is of weekly , daily or monthly bucket ?
How many days SA bring to Production and How many days SA for forecast you are doing ?
Are you using any Program to convert these SA in to PIR and upload ( using any program ) .
Regards,
Jayavimal
Edited by: jaya vimal on Jun 16, 2010 1:33 PM

MRP : Calculating lot size without purchase orders

Hello,
    We have some materials with weekly replenisment.
    We want to calculate the quantity by following the formula : Maximun stock - actual stock.
    The lot size procedure HB do something similar but takes into account the existing fixed receipt elements,
    How can I avoid to take that stock into account? any other characteristic? any user exit ? Any badi?
Thank you

Ander,
Check BADI - MD_CHANGE_MRP_DATA, this may be helpful in achieving your requirement.
Regards,
Prasobh

Help on Planning Calender and lot size procedure settings

Hi Gurus,
We have 2 different schedule at the moment for our PO Placing to our supplier :
1. Planning Calendar D01 --> For Seafreight shipment, PO Placing on bi-weekly basis, every Monday and RDD (Request Delivery Date) is on Thursday (11 days after PO Placing)
2. Planning Calendar D02 --> For Airfreight shipment, PO Placing on weekly basis, every Friday and RDD (Request Delivery Date) is on Wednesday (5 days after PO Placing)
Now we have required to change the SEAFREIGHT process by having the PO Placing on weekly basis, every Monday and RDD (Request Delivery Date) is on Wednesday (9 days after PO Placing).
Please let me know the step by step procedure to create a new Planning Calendar and Lot Size Procedure to accomodate this requirement?
Thanks for your help.
Regards
Brijesh

Dear Brijesh:
1. I think you are planning to change the Planning calendare D01.
2. For this go to MD26- GIVE THE plant / palnning calendar id.
3. Then in the CAlc rule for spec peroid - change the day from wednesday to Monday.
4. SAve this and generate periods.
5. Now in the maeterial master- check if you have the lot size as PK and also planning calendar as d01.
6. In the planned dleiveyr times you enter 9 days.
Kindly check this and revert back.
Reg
Dsk

Master Data on Lot Size Tab

Hello Guru,
I need your help with regards to the master data set-up we have in APO. In tab Lot Size, the Procedure of our products is BY PERIOD, period type is W (weekly).
We are now having issues in the quantity recomended to received, as you can see we have 23 days as safety time, but the system is calculating to have around 100 days of coverage (days of supply)
if we compare inventory target in items on a weekly view, we should have around 150m items, and the system is calculating to have around 500m items
Does this set-up in master data is a factor? hope for your help.
FYI.
We check other code in the location that is ok, we see that in its master data Procedure = Lot by lot. And the other ok one is its Procedure = BY PERIOD, Period Type = D (daily)

It would be helpful if you explained which engine/heuristic you are using.
If you use lot for lot is the quantities exactly matching the demand?

Weekly lot size

Similar Messages

Maybe you are looking for