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APO Constrained and unconstrained Forecast for a Product, Location

nagarajan_ramudu
Active Participant
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970

Hi Gurus,

Please let me know the simple ways to get the constrained and unconstrained forecast for a product / location. I am new to APO, so please help me to send the detailed information. I would really appreciate it.

Thanks in advance for your wonderful help.

Best regards

Nagarajan

Accepted Solutions (1)

Accepted Solutions (1)

Former Member
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Hi Nagarajan,

As Datta rightly pointed out, say for eg if your total forecast is 10000 for a

location product which is called unconstrained forecast.

When this unconstrained forecast gets released to SNP, and if your

supply capacity at SNP is only 8000, then the balance 2000 cannot be

supplied through SNP because of various constrains and when this

gets released to DP, it gets updated as constrained forecast.

Hope this is clear now.

Regards

R. Senthil Mareeswaran.

nagarajan_ramudu
Active Participant
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Thank you for all your responses.

I am moving forward to select planned orders in APO using BAPI_MOSRVAPS_GETLIST2. Do you have an idea what parameters do I need to provide in order to get the planned orders?

To start with, I gave the following input:

Logical system

Start time and End time

Production selection (material in 18 digit number)

Location selection (plant)

What other paramerts do I need to fillup in order to get the planned orders?

First of all, am I using right BAPI?

Thanks for all your help.

- Nagarajan

Former Member
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Hi Nagarajan,

For the BAPI : BAPI_MOSRVAPS_GETLIST2

You can detailed documentation in the transaction BAPI and select the specific BAPI and click on documentation

This gives you clear picture.

From the same menu or through SE37 menu you can test the BAPI and check the parameters

RFC target sys:

Import parameters

u2022 LOGICAL_SYSTEM

u2022 START_TIME

u2022 END_TIME

u2022 EXCLUDE_EXPORT_FLAGS

u2022 MAX_NUMBER_OF_ORDERS

u2022 TRANSFER_MODE

u2022 PLNG_VERSION

u2022 IO_NODE_SELECTION

Selection Tables are as below:

u2022 PRODUCT_SELECTION

u2022 LOCATION_SELECTION

u2022 LOCTYPE_SELECTION

u2022 ORDERTYPE_SELECTION

u2022 ORDER_SELECTION

u2022 PRODUCT_LOCATION_KEYS

u2022 ATPCAT_SELECTION

u2022 CFG_SELECTION

Example of manufacturiing orders ATP catagoreis are :

Production / Process orders AA , AB, AC, AD ,

Planned orders : AI, AJ, AK, AL

SNP Planned orders : EE

I hope this will help you.

Please check and confirm.

Regards

Datta

Answers (2)

Answers (2)

Former Member
0 Kudos

Nagarjan,

When you run the fortecast in DP you consider the sales history. Now, this sales history is actual sales. While forecasting all that is considered are these values of the past and not the present and future capability to actually meet this forecast. Its just plain statistically generated numbers. Now suppose based on your sales you generate the following forecastL

Jan 1000

Feb 1000

Mar 1500

This is then released to SNP. Use the TX /sapapo/mc90. The idea is now to EVALUATE THIS FORECAST AGAINST OUR CAPABILITY TO SUPPLY, IN OTEHR WORDS CONTRAINTS!

After releasing to SNP you can do a finite planning taking into consideration constraints such as Capacity, vendor capabilities, procurement constraints etc... Its almost always the case that the exact numbers cannot be met and thats whgy we do all the replanninga and levelling and rescheduling etc etc...

In SNP you can run an unconstrained pla., You can then level this using SNP capacity levelling. Remmeber this process may span certain levels like DC- > FG Plant -> SFG Plant etc...

After considering supply capcbilities you can come up with a REVISED forecast:

Jan: 800

Feb: 1000

Mar: 1600

Note that for March you are able to take an increased volume. You can now release this plan to DP back again to tell it that this is the demand I can meet and this is what should be planned. This can be done using Tx /SAPAPO/SNPFCST or /SAPAPO/LCOUT

Hope this clarifies.

Abhi

Former Member
0 Kudos

Hi Nagarajan,

Output of APO demand planning without consideration of the supply capabilities is unconstrained forecasts. In APO Demand planning, we get sales history, correct the same, and execute statistical forecast models to generate baseline forecasts. To this, we add promotions, market intelligence and this becomes the unconstrained forecast.

When the above forecasts are released to APO Supply Network Planning appropriate SNP procedure is executed and sourcing capacities are checked and a feasible rough cut plan is created. When this feasible / constrianed plan is released back to APO Demand Planning, that becomes constrained forecast. Demand Planner compares the original unconstrained the constrained forecasts and arrives at final figures.

Therefore the modeuls you need to implement are APO demand planning and supply network planning.

Detailed SAP help is availble, please go through it before to understand the detailed processes:

http://help.sap.com/saphelp_scm70/helpdata/en/7e/63fc37004d0a1ee10000009b38f8cf/frameset.htm

If APO SNP is not implemented, then unconstrained forecasts are released to outside system and a feasible plan compared outside and the same uploaded back to APO DP for comparasion.

I hope this gives you insight.

Please check and confirm.

Regards

Datta