SNP Optimizer and dummy procurement

Hi,
Is there anyway SNP optimizer don't create dummy purchase orders at the distribution center? We have high penalty cost for non delivery. If there is no supply available/ (or some reason master data is missing), Optimizer is creating Purchase requisition without any source of Supply. We want to avoid this Purchase requisition.
Thanks everyone for sharing your expertise.
Shibu

Hi,
Optimiser will not create Pur Req with source as blank if the supply is not avaialble at the source, instead it will incur demand loss cost.
Opt will create PR with source blank only if you have define Procurement type as F and no source has been defined, you can either define a source or change the procurement type to E.
Also their is a note in case of optimiser which prevents creation of PR with source as blank, but I am not able to access the SAP notes and so cant provide you with the note number, you can just check out.
Thanks,
Sanjog

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SNP Optimizer and product priority

Hi all,
Is SNP Optimizer respects product priority? Some part of the documentation says, it respects, and someother part says no consideration. Which is correct ?
Shibu

Hi Shibu,
The product priority is not considered by the Optimizer -
There are actually two ways of giving the priority -
1. It is by giving different Non Delivery and Delay Penalty Cost for these products.
2. The other option is SNP Optimizer Priority Profile which is less complicated in terms of Master Data Maintenance. If you define the priority profile then the optimizer first plans the products with more priority and then plan the other set of products.
Regards,
Tushar Bhalla.

Differece between SNP Optimizer and Deployment Optimizer

Hi,
Can anyone please list down the difference in the planning method for a deployment optimizer and SNP Optimizer?
Thanks & Regards,
Sanjog Mishrikotkar

Hi Sanjog,
First of all if we understand the difference between SNP Heuristic Planning run which finds the 'Source' of Supply with dates and quantities and Deployment Planning run which CONFIRMs the Supply .... then it is easy to understand the difference between SNP & Deployment Optimizer.
The Optimizer as you know Optimizes based on Costs and Objectively tries to MINIMIZE it. Therefore while the SNP Optimizer finds the most cost effective way of finding the Source of Supply with dates and quantities, identifying where in SC it is better to Store or move the Product, while the Deployment Optimizer generates the Best way to CONFIRM whether the Supply can ACTUALLY be done for the next few days. Deployment precedes the TLB Run which after confirmation we put the Quantities on a Transport Load to build Orders for Execution (Shipping).
Both are Cost based & use the Same Costs Information ... however one Plans and the Other Confirms. During Deployment Optimization run, the Optimizer may decide to confirm the supply from a different source than what the SNP Optimizer planned based on the Available to Deploy Stock Quanties and the Cost of Confirming the Supply. The Deployment Optimizer will apply Fairshare & Push/Pull Rules and looks at the Push and Pull Deployment Horizons which SNP Optimizer cannot. The Difference is also in Planning Time Range. You plan SNP Supply for mid to long term time range. The Deployment looks at Confirming the supply in the next few days from TODAY.
So in short first understand the Difference between a SNP Heuristic and Deployment Heuristic and apply the same principle to a cost based optimization. This should tell you the difference between the two.
Try read this ... First para on Deployment Optimizer ...
http://help.sap.com/saphelp_scm50/helpdata/en/1c/4d7a375f0dbc7fe10000009b38f8cf/frameset.htm
Read the First Paragragraph as well as 'Distribution based on Lowest Costs' section
Hope you find this answer usefull. Reward Points if it is.
Regards,
Ambrish Mathur

Difference between SNP heuristics,Optimizer and CTM

Dear Friends,
can any one explain me what are the basic difference in SNP planning methods
1) SNP heuristics
2)Optimzer
3)CTM
when should we use these method in SNP , is all the methods are used in SNP impelemtation ?
just give me some idea about it
Thanks & Regards
Raj

Hi Rajkumar,
                  Please find the difference among three
Comparison of the Planning Methods
you use optimization-based planning or CTM planning if one of the following conditions applies to you:
·        Your business environment is subject to strict constraints (for example, you must take into account production capacities, transportation capacities, storage capacities, and/or handling capacities)
·        You have alternative production locations and sources of supply (locations, production process models, and external procurement relationships)
·        You can decide between early production and late production
·        You share resources, meaning that multiple products are produced simultaneously on the one resource
We recommend that you use heuristic-based planning or CTM planning if any of the following conditions apply:
·        You wish to plan on an infinite basis (meaning that you do not wish to consider capacities) for the medium to long-term horizon (heuristic).
·        You wish to take into account predefined quota arrangements; for sources of supply, for instance (heuristic or CTM).
·        You wish to plan or fulfill demands on the basis of priorities (CTM).
Optimization-Based Planning :
http://help.sap.com/saphelp_scm2007/helpdata/en/09/707b37db6bcd66e10000009b38f889/content.htm
The SNP optimizer offers cost-based planning. This means that it searches through all feasible plans in an attempt to find the most cost-effective (in terms of total costs). Total costs refers to the following:
·        Production, procurement, storage, and transportation costs
·        Costs for increasing the production capacity, storage capacity, transportation capacity, and handling capacity
·        Costs for violating (falling below) the safety stock level
·        Costs for late delivery
·        Stockout costs
Heuristic-Based Planning
http://help.sap.com/saphelp_scm2007/helpdata/en/a1/b60b4b2fc211d3b6270000e82de178/content.htm
The heuristic is used as part of a repair-based planning process consisting of the heuristic, capacity leveling, and deployment. The heuristic run processes each planning location sequentially and determines sourcing requirements. The heuristic processing groups all demands for a given product at a location into one demand for the bucket. The heuristic run determines valid sources of supply and corresponding quantity based on pre-defined percentages for each source of supply (quota arrangements), or procurement priorities for transportation lanes and production process models (PPMs) or production data structures (PDS). The demands are then passed through the supply chain to calculate a plan. However, this plan is not necessarily feasible. The planner can then use capacity leveling to adjust the plan and formulate a feasible plan.
Capable-to-Match (CTM)
http://help.sap.com/saphelp_scm2007/helpdata/en/c4/986c39b768ca2fe10000000a114084/frameset.htm
With this function, you can execute a multi-level, finite planning of the demands in your supply chain. Unlike the Supply Network Planning (SNP) optimizer that executes cost-based planning, CTM planning uses a heuristic procedure. In other words, CTM does not optimize the costs. Instead, you can use priorities, for example, to influence the sequence of demands and the selection of the procurement alternatives. CTM planning does not consider the individual production and distribution levels one after the other, such as the classic MRP run, but considers them at the same time. This guarantees that CTM planning generates a plan that can be executed on schedule.
Hope these details will resolve your queries
Regards,
Santosh Kumar Mishra

Need info on Product interchangeability in SNP using Optimizer and Heuristi

Can anyone suggest steps to configure product interchangeability in SNP using Optimizer and Heuristics
we have a scenario for 1:1 config of predecessor and succesor product , same Units, across locations using Full and Forward directions for some combiantions of products.
I would like to know prerequsites to configure this setup and any good links that lead to config steps.

Hi,
You can refer these help library for further help
http://help.sap.com/saphelp_scm70/helpdata/en/21/186b398c15ef59e10000000a114084/frameset.htm
http://help.sap.com/saphelp_scm50/helpdata/en/2e/847337613fbc40e10000009b38f8cf/frameset.htm
Thanks,
nandha

SNP Optimizer Issue

Hi Experts,
We are working on SNP Optimization scenario with Transportation, Procurement, Strorage and penalty Cost. Our business process trading industry (we procure and sell).
We maintained Optmizaion profile with linear and Primal simplex Algorithm. We took a sample scenario where our product has four suppliers with diffrent transportation costs maintained in transportation lanes.
In SDP94, Optimizer behaving diffrently.
Case 1: When we run directly at destination location (product + Destination) level optimization running smoothly with out picking any transportation lanes, costs. Subsequently no purchase requistions are created.
Case 2: When we select all locations (Product + Source and Destination) and run optimization the following errors are coming which we are not able to identify the origin.
Error 1: Cost function 051MhWG07j6MwgLZXQcXSm not found
Error 2: Conversion from STD to EA for product WDE-MATL1A not maintained
Error 3: Error occurred when reading data
We checked CCR no errors are identified. Also there is no UOM called STD. We couldn't understand why Optimizer is proposing STD to EA conversion error.
Can you please throw some light.
Thanks in advance

Hi Ugameswara Rao
When you run optimizer,you need to run as a whole including all teh Network...So,the first observation is standard
Regarding teh second issue,It is a Master data inconsistency,So,please identify the 'concerned location product' and maintain the cost accordingly(Check teh log to find the concerned location product)
Regarding error "Error occurred when reading data",please raise a seperate thread,as the raesons for this are multiple...but try this first run //om17,model consistency check and correct the data model set...but,the reason for this could also be a softwre error....hence,if the above don't help,please rasise a seperate thread with all details like: STEP in which thi serror occur,and also teh message log details
Thanks and Regards
Suresh

Product variant constraint in SNP optimizer run

Dear All,
I have a business scenario where I require a constraint on the number of FG variants produced per day. A number of FG SKUs come under a particular variant. On any day the factory is able to produce only a fixed number of variants (say 5). I am looking for a way to map this constraint in optimizer run.
Will appreciate your thoughts to solve this problem.
Regards,
biplab

Hi,
Does SNP Optimzer considers the Set up costs in the planning run ?
SNP Optimizer considers following factors for the optimizer Run:
Factors Considered During the Run
u2022        Valid transportation lanes
u2022        Lead times
u2022        Transportation capacity
u2022        Transportation costs
u2022        Handling capacity
u2022        Handling costs
u2022        Production capacity
u2022        Production costs
u2022        Storage capacity
u2022        Storage costs
u2022        Time stream (location master data)
u2022        Lot size (minimum, maximum, and rounding value)
u2022        Scrap
u2022        Alternative resources
u2022        Penalty costs for not fulfilling demand (supply shortage)
u2022        Safety stock violation penalty costs
u2022        Procurement costs
u2022        Shelf life
u2022        Cost multipliers
u2022        Location Products
u2022        Fixed PPM/PDS resource consumption
u2022        Fixed PPM/PDS material consumption
Regards
Datta

SNP Optimizer With Runtime Errors

I am Trying to run SNP Optimizer.
The actions performed on SNP Interacive planing book is Selected the Product Locations in Selection window and When trying to load data or click optimizer it is giving a runtime error.
The Error Says: A table is refered to in a SAP open SQL statement that either does not exit or is unknown to the ABAP dictonary.
Table involved is /SAPAPO/STOCKANC.
Please , can anyone help me understand. What the error is and how to go about it?
That would be a great help.
Thanks
GAyatri

Hi Gayatri,
Very first check is already mentioned in the error message.
Did you check that the table "/SAPAPO/STOCKANC" exists in your system? When you would dispplay the table in SE11, you should see against the table name that it should show up as "active".
Click on "check" and then "activate" button if the table is not active. This would make it active.
Alternatively take help from your ABAP colleagues.
(Table should have a description "Key and Descriptive Data for Stock". You should also try to find out if recently some OSS note was applied which is causing this kind of issue)
Thanks - Pawan

Creating non pegging relevant snp orders by using snp optimizer

Hi all,
We want to create snp planned orders with non pegging relevant by using snp optimizer, how can we do this?
Regards,
Burak

Hi Burak,
In IMG, use the following menu path
SAP SCM Impl Guide --- APO --- Supply Chain planning --- PPDS --- Global settings --- Maintain Global parameters and values --- Under Planning Tab --- Activate fixed pegging.
This is universal setting for the entire client.
Hope this helps.
Please confirm
Regards
R. Senthil Mareeswaran.

Deletion Time Period at SNP Optimization

Hi!
I'm facing some problems at my SNP Optimization due a wrong Deletion Time Period.
Where could I maintain the "Deletion Time Period" (DEL_TRANS and DEL_PROD) for SNP?
Thanks a lot!
Victor Leao

Hi Pawan,
Thanks for your reply.
In fact, it is not a program error. The situation is the following:
For example:
I have some SNP documents (stock transfer) at 23.12.2011. They were generated at the last optimization.
Now, a new optimization is run and some documents at 23.12.2011 were not deleted.
Checking the "Deletion Time Period" (DEL_TRANS) at SNP Optimization Log, I see that for those products the "Start" is 06.02.2012 and the "Finish" is 06.05.2012. So, documents before 06.02.2012 are not considered for deletion.
The products wich documents were deleted have "Start" at 01.01.1970 and "Finish" at 06.05.2012.
I would like to understand how can I maintain those dates for DEL_TRANS.
Thanks in advance,
Victor Leao

Questions: SNP Optimizer - Pros/Cons/Pitfalls

Hello Everyone,
I have few general questions for the folks who have implemented SNP Optimizer. Please share your experience.
1. What are the pluses and minuses using SNP Optimizer?
2. What are some of the pitfalls using SNP Optimzer?
3. For successful SNP Optimizer implementation, what are things that the project team need to watch out for and focus on?
4. Any Tips on how to calculate relative Costs and penalties
5. What type of reporting can be done on SNP Optimizer?
Thanks,
Sanju

Hi
The following link may help you in comparing Optimizer with other Planning engines.
http://help.sap.com/saphelp_scm70/helpdata/EN/1c/186b398c15ef59e10000000a114084/frameset.htm
Thanks
Amulya

SNP Optimizer run ends with error: Error when determining Customizing data

Hi All
Can you help please what settings are missing: SNP optimizer run canceled with error "Error when determining Customizing data".
Thanks
Best Regards
Andrey

On integration tab of SNP optimizer profile,
maintain 'regard as customer demand' for both dependent demands and distribution demands for fixed orders.
By default it is 'regard as hard constraint' which should be changed.
bye,
Nitin Thatte

How to determine runtime of SNP optimizer

Hi Experts,
I am new to SNP optimizer, i would like to know the factors that determine the runtime of SNP optimizer,
for example if i have 100 product-loc combination, what should be my runtime?
Thanks in Advance
Raja kiran R

Hello Raja
Following details are based on my recent experience/learning's while working Optimizer runtime(it was a nightmare)
SNP Optimizer varies regardless of number of location products or demands.
SNP Optimizer runtime is split into following 3 main steps -
Runtime 1. Reading input data
Runtime 2. Solution Calculation and
Runtime 3. Order Creation.
Runtime 2 is usually varies depends on degree of problem complexity and number of iteration optimizer has to go through before finding cost effective/optimal solution.
Analyzing the optimizer logs/trace file and collect various statistics/facts for couple of weeks can give you some idea on optimizer runtimes. Use below Tcodes - /SAPAPO/OPT11 and /SAPAPO/SNPOPLOG for collection such statistics on following criteria's -
Please keep a watch on inputs like - Number of products, locations, location products, transportation lanes and demands.
and Output like Total Fulfilled Demands, Total Un-Filled Demands and Total number of stock transfers.
and Result Indicators like how many ProdDeco iteration, Solution Quality/ Cost iterations and what is the Service Level achieved.
Besides, you can control the Optimizer runtime by setting up the Maximum Runtime(in Minutes) in Optimizer profile. Also use Parallel profile process for improving the performance of the optimizer run.
Also ask you basis team to watch system performance when it is reading data from livecache, solving the problem or creating orders in livecache, if there are any memory issue etc.
Hope this will help.
Thank you
Satish Waghmare

Considering Forecast in the past for SNP optimizer

Does SNP optimizer considers the forecast in the past as a requirement?
I tried with standard book and dataview but SNP optimizer did not consider past forecast. I checked optimizer log, forecast was not there also.
Am I missing something? Or is it default behaviour?
Thanks.

Hi
Yes that is the default behaviour, essentially the Optimiser has assumed that anything in the past has already occurred and will only start to plan demand from the first bucket onwards.
Regards
Ian

SNP Optimizer with PDS

Hi Guys,
Is it possible to use SNP PDS with alternate mode for SNP optimizer in SCM 7.0 , If it is not possible then how to create many SNP PDS if there are alternate resources assigned for the product.
Thanks and regards
Thamizh

Hi Thamizh
You can not create SNP PDS for alternate mode.
You need to create different production version for alternate Mode. Only that way you can send SNP PDS.
Regards,
Hitesh

SNP Optimizer and dummy procurement

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