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

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SNP quota arrangement with fixed lot size

Hi all,
i have a question regarding quota arrangement for external procurement in snp heuristic. Whe have 2 sources of suppy created by info record. The quota is 25% for the first and 75% for the second one. In product master there is maintained a fixed lot sice of 500.000. Im wondering that the snp heuristic creates 2 requisitions of 500.000 for each sos at the same day. So we get an serios excess. Any ideas?
Kind regards,
Christian

Hi,
thanks for reply. Ok, normally net requirement calculation works properly. In case of a shortage the heuristic shall apply an receipt with the fixed lot size wich is maintained in material master. However, in out particular case it generates the double receipt quantity which is not needed at the receipt date.
The heuristic should do the following:
Day 01 Stock 100
Day 02 DepDmd 20
Day 03 DepDmd 20
Day 04 DepDmd 20
Day 05 DepDmd 20
Day 06 DepDmd 20
Day 07 PurReq 100 !! Source 1!!
Day 08 DepDmd 20
Day xx PurReq 100 !! Source 2!!
and not:
Day 01 Stock 100
Day 02 DepDmd 20
Day 03 DepDmd 20
Day 04 DepDmd 20
Day 05 DepDmd 20
Day 06 DepDmd 20
Day 07 PurReq 100 !! Source 1!!
Day 07 PurReq 100 !! Source 2!!
Day 08 DepDmd 20
In this example 100 would be the fixed lot size from material master.
Best regards,
Christian

SNP Discrete Opt .... Lot Size is not correct

Dear Experts ,
I need some help with SNP Optimization execution ...... Actually i am executing discrete optimization , using weekly buckets.
For i.e
I have a demand with 100 pc ..... minimum lot size is 60 and max lot size is 62 .....
SNP should create two lots with 60 pc each one , but it is creating one lot with 60 and a second lot with 40 ..... It is considering last lot exact to fulfill demand .....
All PDS have discretization flag and the relevant parameters for discretization are set on OPT profile .....
I some setting missing ?
Please i need some help asap .....
Kind Regards
Mauricio

Dear Nandhu ,
Thanks for you help.
At OPT Profile , Discret Constraints tab at Minimun PDS Lot Size and Integral PDS i am maintaining 90 D ..... and when i execute the optmizer i am using 60 days . The Planning Book Horizons is 3 months in weekly buckets.
Kind Regards
Mauricio

Min max lot size time based for use with SNP and PPDS

Hi all, Is there anyway to set up time based min and max lot sizes? ie we want to have a Max lot size which is small for use with the first 3 months of our plan which starts life in SNP and then converts to PPDS and into blocks for block planning, but months 4 to 36 we want to leave as large max lot sizes as there is no need to have the small max lot sizes for the different horizon.
As far as I can see there is only a material/plant lot size and Max lot size and no way to have a different setting in a different time period.
Thanks
j

Hi John,
As you know, in the product master, the lot size maintenance is time-independent, so that obviously can not be used for your scenario. As per my understanding, to meet this using standard functionality, you can maintain multiple product specific t-lanes (for STRs) and PDSs (planned orders) with required lot size ranges and validity dates (for short or long term horizon). But, again since the validity of t-lanes and PDSs will not be automatically rolling forward so the updating the validities will be a challenge.
The other option could be to enhance the heuristic functionality at lot size selection step while creating order.
Regards,
Umesh

Manual Lot Size issue in SNP

Hi Gurus,
I have an issue while creating planned orders manually in the planning book as it is not splitting into the lot size which was maintained in the product master.
Some details on the issue:
I have a product X and I maintained '4000' as the fixed lot size in product master. When I enter 20000 it should spilt it into 5 batches and which is not happenning and it is placing the entire thing as one bulk order of '20000'.
(If I run heuristics, it is splitting basing on the lot size maintained).
It was working correctly for 1 product and for many of the products it is not working. All the parameters for the products are same and there is no difference.
For the product which was working correctly for one user and for the same product if I try it is not working.
I probed more into the issue to see if any parameters were added in his profile, there is one custom parameter which is assigned which splits the planned orders basing on the lot size maintained. I even assigned that profile, it worked once and later it is not working.
The strange thing is for one user it works and for other users it doesn't even work for the same product.
Note: We recently moved from SCM 4.0 to SCM 5.1.
Did any one faced such kind of issues before? Any suggestions are highly appreciated.
Thanks and regards,
Murali.

Hi Murali,
I am surprised to read the issue. I will never expect manual planned order to get split. The lot size settings are applicable only for automated planning i.e. heuristic (MRP in R/3)
If you have indeed observed that the system splits the orders by lot size, I have nothing to comment. (probably that is why you did not get a reply for almost a day.
If you have found some settings and find that they do not work, please raise a message to SAP for the same.
I do not think system should split the manual planned order.
Regards,
Nitin Thatte

SNP Heursitic run - Lot size of Purchase Requisitions

Hi,
when we run network Heuristics we get Preqs with decimals. As far as I can see we have maintained the lot size correctly and even the rounding value. Still I get Preqs with 0,054 EA, but I'm expecting to get 1 EA.
Has anyone experienced something similar?
Thanks,
Lars

Thanks for your help, Aparna.
Seems like I forgot to specify that the issue was related to the PReqs in R/3, created by the Heuristic run in APO.
However, I think we found the problem. The rounding value from Material Master was not CIF'ed over til APO. When we maintained the rounding value manually in the product master in APO we got the result we wanted.
Thanks!
Lars

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

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

Periodic lot Size

Dear Expert,
I working with Period lot size "W" with No. Of period 1 and the Period factor 1
I maintain this setting in Both location production Plant & Distribution Center
I have Demand from Distribution Center 2014, when i run SNP Heuristic and after that PP/DS
The stock transfer coming before the End date of the PlOrd
Start Date & Time: 11.11.2011 07:00:00 to 15:00:00 PReqRel
Start Date & Time: 11.11.2011 07.:00:00 to 15:00:00 PlOrd
Your Help Very Appreciated
Regards
Rami

Hi Ashok,
Thanks for your Response ..
Of course i cheked the use period factor to working with period lot size
Please advise
Rami

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

Min Lot Size and Rounding value

Hello MM Gurus
need a small help!
I m a bit confused regarding the use of Min lot size and Rounding value in material master "MRP 1" view..
can some body teach me a detailed functionlity for both..
As both serve the purpose ..for e.g. my requirement is 7 and min lot is 10 system will create proc.proposal for 10
in similar way if i use rounding value as 10 , then als system will create proc.proposal for 10 only even if requirement is 7.
grateful if you could pl expain me the functionality of both...
another query..if I use Min lot size in material master will the same will serve the puspose of <b>min order qty ( maintained in PIRs)</b>
i'lll appriciate with good reward points...thanks in advnace
Br
Sumit

Helo Guys..
Thanks for valuable inputs..
i have assigned the appropriate rewards ..
pl clear my this doubt also
e.g. for a materials
Min Lot size - 40
Rounding value 25
requirement is for - 35
will it be 40 or 50 ..i understand 50..
j
ust anothe rquery..pl treat this separate issue..and separate rewards will be given
<b>can I use max stock level w/o use of lot size "HB"</b>
e.g. if my max stock level is 80
and min lot size is 30 and current stock is 60
what'll be my proc proposal created by MRP , i dont want system to cross 60 stck,,
Thanks in advance
BR
Sumit

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

CTM Planning: How to Handle Min Lot Size Daily Resource Capacity?

Hello,
I am facing a situation where the Min Lot Size values require more than a days capacity of the Resource.
Finite Planning CTM is skipping all demands.
Example:
Daily Resource Availability = 24 Hrs,
Capacity Consumption per PPM = 1000 Kgs / 1 Hour.
Min Lot Size = 50,000 Kgs
Capacity requirement for the 50,000 Kgs = 50 Hrs
Is there a way CTM can plan this?
Thanks,
Ran

Yes the time buckets in CTM profile has nothing to do with this limitation...
Nor does the infinite/finite setting.
Basically its a limitation of how the resources are stored in livecache.
You can not exceed the capacity for which the resource is stored...
The only workaround is to define the resourcde in weekly time buckets by manually defining a capacity profile.
I don't like this as every order will take a week...
I am not aware of any other workaround...
I have seen other clients take out the minimum lot size for SNP, then when cif transfer the order back to R/3, it is combined to 1 large order...
Ken Snyder

Generating alerts in Purchase Requisition = 3*Lot size of material

Hi Experts,
We want to create alerts in SNP.
Below is the condition.
Heuristics for multiple product-location will run in background.
After the Purchase Requisitions are created, we want to compare the quantity of created purchase requisition at each time bucket with lot size maintained for that product-location.
Alert should get generated if the PR qty is >= 3*lot size of that product-location.
is there any user exist or function module avaialble to call the tabel which contains rounding profile/lot size details in APO?
Thanks for looking at it,,
Rgds/
Jay

Jayprakash,
You can extract the Lot Size values using the macro function MATLOC()
MATLOC( 'FIELD_NAME' ; <'product'> ; <'location'> ; <'version'> ) returns the content of a numerical field in the location/product master record of the specified product and location. The arguments for product, location, and version are optional. If you do not specify an argument for the product and/or location, the system uses the current product/location. However, it is better for performance reasons to use the functions ACT_LOCATION and ACT_PRODUCT. For example, MATLOC( 'BSTMA' ; ACT_PRODUCT ; ACT_LOCATION ) returns the maximum lot size for this location product.
In your case you can use:
MATLOC( 'BSTFE' ; ACT_PRODUCT ; ACT_LOCATION ), assuming you are using Fixed LOT Size. You can store this value in a layout variable 'V' and raise alerts based on condition:
IF ( KF for PREQ > 3 * Layout Variable V) RAISE Alert
Hope this helps
Cheers!
Abhi

Lot size EX with Minimum lot size

Hi all,
I have a query like how will the material behave if the following settings are made
MRP type:M0
Lot size:EX
Minimum lot size:100
Rounding value:100
Maximum lot size:300
My main question is is it right to use lot size EX along with mimium lot size value,rounding value,Maximum lot size defined.

Hi Anshul
Ex is lot for lot order quqntity. It will put lot size exactly what is required from MRP run. During MRP run after net requirement calculation the system will look for Lot size,Rounding value and Rounding profile before making procurement proposal.
You can use EX with Rounding value
If you requirement is 180 Nos and the rounding vaule is 100 the lot size for this will be 200.
Hope this will clear your doubt.
Regards
J. Saravan
Edited by: Jagannathan Saravanan on Feb 28, 2008 10:21 AM

SNP - Lot Size Query

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