Lot Size Planning for Procurement

Hi guys
In our company we work with minimum lot sizes for procurement, and we need to configure minimum lot sizes for procurement in the SNP optimization run. It´s posible to do it in SNP, pls can someone tell me how to configure this in SNP?
David

Hi David,
I am glad to hear that.
Regarding your performance issue: it is very usual to have long runtime when using discrete model.
The complexity of this model is much higher than a linear problem; so the optimiser takes time to find THE optimal solution.
However there is a lot you can do to make it better:
1. Split your model: instead of running 1 big optimiser, run serveral smaller one in parallel.Ensure your model are all independant (e.g. no common product or resource)
2. Use decomposition: (product/ time/resource; based on your scenari) to simplify the porblem, hence speeding the solution.
3. Set a maximum time
You do not have to wait for THE optimal solution. The optimiser can sometime very quickly find a very good solution; the last hours are spent "fine tuning" it. Potentially, you might not be able to see the difference between a 4h job and the 15H one).
Hence SAP advises to set a maximum runtime when working with discrete model.
The question is how to define this maximum time to optimise the ratio solution quality / runtime.
Answer: test it, check the result. Be aware that perfomrance testing for the optimiser can take a while.
4. fine tune you optimiser setting
There is a couple a finetuning that can be done to improve performance, especially for discrete model.
I will not be able to help you woth that.
As far as I am aware only the SAP optimiser team has the expertise to help here.
I strongly recommand to contact them; their help is often invaluable. They will also help you to define the 3 first points.
I hope this will help you.
Thanks and Regards
Julien

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Sequence dependent lot-size planning as a basis for PP/DS blocks?

Hi ,
I consider the following system setup for a Mill Products planning implementation .
1) In SNP one performs SOP planning with common goals to adjust sales plan, establish equipment maintenance plan, transportation plan, etc. The first month of the SNP plan is supposed to be in daily buckets. Using the SNP optimizer is a good option since the business goal is to use equipment more efficiently, let's say to minimize setup costs, and there are warehouse limitations for semifinished products as well.
2) In PP/DS we are going to use CDP and block planning since it is the best practice.
3) SNP planned orders can be used as a basis for PP/DS blocks on the resource, upon the condition that the configuration of SNP product - kmat variant and block requirements match.
In SNP i see that the SNP PDS has a duration of 1 day (that's fine), but the sequence dependent lot-size planning requires a bucket of at least 1 week long (1 month in my case) since the SNP orders are sequence-optimized only inside of one bucket. The result of such an optimization are additional counters assigned to SNP orders according to their sequence minimizing setup costs. However, orders are not scheduled according to the sequence.
So far it looks like such a combination is not useful as
- Orders in monthly buckets are not scheduled on days and cannot serve as a basis for block dates proposal for PP/DS block planning.
- If a product production volume is less than 1 day, SNP cannot create any more detailed block in principle since the minimal time bucket is daily bucket.
I searched over forums on these or similar topics, however no definitive answer so far for the question in the subj.
Could anyone bring more light on this ? Maybe I am missing something in the setup or sequence dependent lot size planning was designed for other purposes/industries?
Best regards
Vladimir

Hello Asim,
Issue one
in product selection for propagation range you can set your selection criteria which selects the products dynamically. You just have to change your report variants for planning run. Do I misunderstand your concerns?
Issue two
Changing to planning procedure 1 will not delete the PFE but will prevent APO to create a new entry after any MRP-relevant changes happen or heuristic SAP_PP_020 (which creates the initial entry and does the low level code determination) is run.
In some cases procedure 1 will still create a PFE. Please check customizing for details. Thats why I would recommend to create a new planning procedure with "no reactions".
As soon as you prevent APO from creating new PFEs you can just once delete the PFEs in /SAPAPO/NETCH by just setting the first column for these materials blank (select your materials, mark column, delete indicator).
Corresponding table to MDVM is /SAPAPO/PEGKEY. Indicator for PP/DS is NETCH_RRP.
If material is not planned in APO you do not need a PFE in APO.
Issue 3
Maybe utilize table /SAPAP/PEGKEY
As I said if you prevent creating the entry you just have to delete (set indicator blank) once.
Hope that helps.
Regards,
Uli

Lot Sizes Used for Fore cast planning

Dear all,
<b>For fore cast planing and Automatic reorder point planning what are the lot sizes are use full and what are the advantages and effects for each lot size procedure.</b>
I am expecting answer for this question from all of you.
Regards,
Krishna

Hi
These fore cast planing and Automatic reorder point types are consumption based planning.
Hence for these MRP types normally, lot for lot ( EX ) will be used.
You can go through the following link for further info on lot sizing procedures.
http://help.sap.com/erp2005_ehp_01/helpdata/en/f4/7d3f9344af11d182b40000e829fbfe/frameset.htm
Regards
YMREDDY

Lot size use for splitting req. qty. with Two vendors

Hello PP experts,
We have two vendors and we want the each requirement to be split into the two vendor with 30 % for 'A' and 70 % for 'B'.
What are the IMG and master data setting required for the above scenario?
Please let me know whether can will use lot size 'ES' with splitting quota indicator marked in OMI4.
Waiting for your reply.
Regards,
Mona tiwari

Hi Mona,
You have to maiantain first quota arrangement (MEQ1) for the two vendors with alloting the percentage to split the Planned orders/PRs in planning run. Apart from this maintain the lot size either EX, FS or ES with split indicator marked in OMI4 for the quota.
Yes, maintain Quota allowed key in MRP (4) either in purchaing view or in MRP2 view as said by Prasobh.
If helps rewards points.
Regards
TAJUDDIN
Message was edited by:
TAJUDDIN MOHAMMED

Lot size calculation for Purchase order

Hi all,
I want to purchase Labels which comes in lot qty such as in lot of 100,200 etc.
For that particular items i want to do mandatory qty lot size in PO when buyers places the purchase order.
Can anybody tell me How i can map that lot size for the particular item.
Regards,
Anant

Hi,
You can done it with change Material Master.
Enter MM02 t-code, enter your material code and select MRP1 view.
Here maintain Rounding value as 100 in material master.
After when your create purchase order system put quantity as 100, 200, 300 etc.
Regards,
Mahesh R.

PLANNING CALENDER IN LOT SIZE

Hi
What is the function of Planning Calender in Lot Sizing procedure in SNP.

Hi
You can define the planning calendar to define the periodicity of lot size.
For example in our case we want to SNP to create requirement only in alternate month based on lot size.
So we create planning calendar which consist only alternate month and attach to lot size.
Now when we execute the SNP planning, it will create supply element only in alternate month.
I hope this will give insight of it. Please let us know , if it helps you.
Thanks
Amol

MRP run on basis of lot size

Dear all
I have two different lot size routing for a inhouse product are 0-2000 and 0-1500 nos . I planned for 5500 nos , after MRP run system should create planned order as per selection of lot size as 0-2000 for 2 planned order and 0-1500 for 1 planned order .is it possible ?
thans in advanced
regards
siva

Dear,
Quota arrangement can be used if the demand (100) is created in which is define the ratio 60:40 but it will create two planned order after MRP Run. Go to transaction MEQ1 maintain a quota arrangement for this material. In MRP 1 view choose lot size with quota splitting and in MRP 2 view maintain quota usage as 4.
Refer this thread
Re: Quota Arrangement
Please try and come back.
Regards,
R.Brahmankar

Maximium lot size is 200 in MRP1 view.I have purchase order which 400 qty

Maximium lot size is 200 in MRP1 view.I have purchase order which 400 qty , but my system is allowing to pick 400 qty, can you please say wat may be the reason
regards
sakthi

Hello,
As others others experts are saying your maximum lot size will only work for MRP run not for manual created PR.
The system takes this value into account during the automatic lot size calculation for planned orders and production orders. The lot size of the individual orders cannot exceed this value
Regards.
Alok Tiwari

Maximum lot size - create order manually

Hi Experts,
we are in the implementation phase of the project (PPDS) and need your help.
For the products we have the data of Maximum Lot Size, that is a constrain for the process. But when we execute manual adjustments/creation of the planned orders, this maximum lot size is not respected, because for the manual orders is used the heuristic SAP_PP_001 Change Order Manually.
We need to consider the maximum lot size even for manual adjustments/creation.
Does anyone knows a way to consider the maximum lot size when create orders manually?
Thanks in advance
Thiago Cyrillo

Hi Hans,
If as per the requirement you want the system to take into account the period of 63 days reqirement , then as my experience the lot size field should be changed from the daily lot size .......or else the setting is quite redundant in nature........in accordance to your business requirement.
Check for the period lot sizing for detail information..........incase you have any query then let me know ......
Please reward points if it is helpful.........
Thanks
Kaushik

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

How to perform Data Collection on single SFC with QTY = 1 with material lot size 1?

Dear experts,
We are working with SFC qty>1 on a relaxed routing. At a given operation we want to collect the data on single quantity; i.e. SFC qty on that operation, where the collection will happen, will be 1.The corresponding material lot size is for ex 10. The operator must be able to collect data on SFC with qty=1 multiple times until the quantities will be consumed. He must be also able to collect other values on the remaining quantities on the same operation with the same DC group or other DC groups. How many times the data must be collected is dependent on the shop order build quantity. The data may be collected several time but not more than the build qty. In other words some specific data will be collected on a qty of a product while others will be collected against remaining quantity. The data collection must be also done in a serialized manner.
Here's what we have set up so far:
1) 3 DC groups, each DC group has 3 data fields.
2) Each data field has the following restrictions: Required Data Entries = 0 and Optional Data Entries = 1
3) All DC groups are attached on the same combination of operation\material\routing
4) we are using relaxed routing
Process description:
The operator must be able to collect any data field on single product. For that he will enter the operation where the data collect are attached, he will enter the SFC with qty=1 then he will run the data collection after selecting the appropriate DC Group and entering the needed information. The operator will complete the SFC with qty=1.
The operator will pick the next product, select the same SFC and enter qty 1 and collect other value against this product.
Problem is:
Once the first collection is done on a given SFC with entered qty=1, the system is not allowing the operator to do further collects on the same SFC with qty=1 or any other quantity. He cannot select any DC group from the DC group list. We tried also with the table selection menu on the DC Group list but nothing can be selected.
So we tried to play around with the DC group definitions as follows:
A) we set Required Data Entries = 0 and Optional Data Entries = 10. Still the operator was not able to select any DC group after collecting data the first time. We tried to reopen the pod and list again. But we get the same blocking behavior.
B) we set Required Data Entries = 10 and Optional Data Entries = 1. The operator was able to select the DC group after collecting data the first time. BUT operator must enter the data fields 10 times on one SFC quantity, which is not what we want. Besides again he cannot collect other information on remaining quantities on the same operation.
C) There's an option to serialize the SFC before reaching the operation where the collection is happening, then merging ofter complete. Automation is needed here; hence customization. We are highly avoiding customization now, since we expect the data collect to work well on single quantities even when the main SFC has qty>1
Questions:
1) Are we missing any kind of further configuration\setup?
2) Or the current system design does not allow collecting data on single quantities of an SFC which main quantity is greater than 1?
3) Looking at this link Approaches to Collection of Data - SAP Manufacturing Execution (SAP ME) - SAP Library, there's nothing mentioned about same SFC number with multiple quantities!!!
We are using SAP ME 15.0.3.0.
Thanks in advance for your help
Ali

Ali
to collect data for the same SFC multiple times, your system rule "Allow Multiple Data Collection" needs to be set to true for the site.
Stuart

Monthly lot size problem

hi guys,
i am using monthly lot size"MB" for all my raw/packaging materials.
PROBLEM :
material "M1" has leadtime as 30 days(25 days + 5 days QC)
This material is part of Bill of matwrial of Finished good "FG1"
Now suppose if i put requirement of FG1 for 15th jan 2008 and run MRP today 8th dec 2008.
I should get a purchase requisition with delivery date as 8th jan2008.
but this dosent happen, instead i get PR with delivery date as 2 feb 2008.

Hi,
Think you might have to change the scheduling indicator for your lot sizing procedure in tcode-OMI4.
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.
Regards,
Deepak.

SNP - Lot Size Query

Hi Experts,
I have a typical scenario for lot size.
For given product, Minimum lot size is 10000 qty.
But the incremental qty is 100.
i.e. I can product 10000, 10100, 10200, 10300 and so on..
Can anyone suggest settings required for this condition?
Thanks in Advance,
Vipul Shah

Consider maintaining 100 as Rounding Value along with the Minimum Lot Size of 10000.
Somnath

Advance material planning for projects

Dear All,
We have a scenario for fabrication industry. Where client want to plan material procurement in advance for manufacture FG. But BOM of FG will come in later stage when design phase get finished in phases. Initial for cost planning and material procurement planning, they are finding out requirement of material quantities and costing happened on it. This material is planned for procurement, while the BOM will prepared in later design stage. FG are assigned to project activities, and project MRP will give planned orders. these material bom will rolled cost to activities, cost will get doubled and material too. How to handle this scenario, Any standard solution.

Hi Shrikant,
The advance procurement material list should be prepared and then it should be attached in initial stage to project.
Header(X)
Line item 1
Line item 2
This advance procurement BOM should be attached such that
the header(X) will become text item after attachment and
for the line items the Preq will be generated.
For this line item should be make to stock procurement type
and this should behave as dependent and independent requirement
and there will be no duplicacy of the requirements.
You need to dicuss this with PP consultant.

New lot size - consolidates the requirements in the past + current month.

Hi All,
My client has requirment where he needs a monthly lot size "MB" for the Raw materials but that lot size must consolidate the requirements in the past month as well with the requirment of the current month so that we only have one requirement.
In current scenario if we use MB lot size and if we have requirment of 100 pc in month of May and 100 PC in month of June then 2 PR will be created. One for Last month and another for this month. Client wants only one PR for both month and wants Last month requirment sto be clubed with this month requirment it self.

There are more that 1000 Raw materials and most of them have past due requirments. Reason that it has to be done during PR stage it self taht combining different PR to single materials so many materials will be very difficult and time consuming.
Thanks for suggestion though. But client did not accept it.

Lot Size Planning for Procurement

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