Source Location in SNP Heuristics - Planning Run

hi,
I am trying to execute a Planning Run for Manufacturing Location -> Depot model. The scenario is that a depot D1 can be supplied from 2 manufacturing locations ( M1 and M2 ).
Transportation lanes have been maintained as M1 -> D1 and M2 -> D1.
Stocks are available in both M1and M2.
When I take the planning run ( /sapapo/snp01 ), a purchase requistion is being created only from M1 ; M2 is not being considered as a source location.
Can anyone give some inputs on the same.
regards,
Anirudha

Hi! Anirudh,
SNP hueristic run on a standard logic in priority basis.
1) First it looks wheather quota is defined or not. if it finds an inbound quota it will create a purchase req to that location
2) if quota is not defined it looks for lane priorities defined
3) if there no lane priority it looks at per ton means of transport.
Please revert in case of any doubt
Regards
Vaibhav Sareen

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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)
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·        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

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Here is a scenario in which i need some help. A product can be procured from two vendors A and B. So we have transportation lanes set up for those two vendors .
The requirement is to keep procuring from A until the capacity of A is met. Once A's capacity is fully used (say if A can only supply 100 EA a month we want to procure the 100 EA from him ) we want to start procuring from B . How can this be achived with SNP heuristics ? We do not want to run CTM or optimizer.
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Hi Aparna,
Since the planning is happening in APO, this can be acheived by maintaining quota in R3 and as well as using C5 user exit of publication type (APO outbound).
What you need to do is maintain quota in R3 with quantity limitation in R3 for first vendor and then for second vendor with infinity. You need to have both transportation lanes in APO with equal priority.
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This works, we have similar scenario, but ther is no second vendor, so the next PRs will be without source.
OR
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Hope this works
Thanks
Venkat DR

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Has anyone experienced any issue with purchase requisitions not being replanned during the SNP heuristics run (background or interactive). I have a product location combination and about half of the PRs are not being replanned and these are not fixed/firmed. When I say replannned I mean that they are not generating a new Purchase req. #. I have no idea why at this point. Any suggestions would be appreciated.
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Rumi

Rumi,
we faced a ismilar issue and figured out that the issue was due to the change in MoT for the Preq. The earlier Preqs were created with MoT 'Ship' which was then changed to 'Plane'. When we ran the heuristic the Preqs created with Ship were not recreated. This is a standard SAP APO behaviour.
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Source Location in SNP Heuristics - Planning Run

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