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Function documentation Time-Based Demand Distribution Locate the document in its SAP Library structure

Use

When you release data to Supply Network Planning (SNP) or to an ERP system, you can distribute forecast data, which was calculated for a specific periodicity in the demand plan or in the InfoProvider, across a more exact periodicity.

Features

For long-term planning, the demand quantities in the demand plan or in the InfoProvider are often calculated in large time units, for example in quarters or months. However, for short-term planning in SNP or in the ERP system, you want to distribute these quantities in certain portions across months or weeks. The time frame for this more detailed planning begins on the start date of the release horizon and stretches across the number of periods you have defined in the corresponding periodicity. You use weighting factors to determine the portions in which you want the system to distribute the quantities across this time frame. The simplest solution is equal distribution, but you can also create different distribution models. For example, you can create a model in which demand quantity is relatively low at the beginning of a period and increases toward the end of the period.

You can also split the desired time frame into several sections with different periodicities. This is necessary, for example, if the demand plan was calculated in quarters, but you want to release the data for the first quarter per month and the data of the first month of this quarter per week.

After the release, the system determines the demands for each workday while taking the weighting factors into account. The system bases this on the shipping calendar of the target location. It then aggregates the calculated demand quantities of the individual days to the defined periodicity (for example, week or month).

For more information about the release, see Release of Forecast Data.

Activities

For the time-based distribution of demands during the release, you need a period split profile and a distribution function.

Period Split Profile

To create a period split profile, on the SAP Easy Access screen, choose Advanced Planning and Optimization ® Demand Planning ® Environment ® Current Settings  ® Maintain Period Split Profile.

Here you define the time frame for the distribution and the desired target periodicity. The time frame results from the number of periods of the starting periodicity for which you want the target periodicity to be valid. You can specify several levels of detail, each of which has a smaller periodicity you can select. Each new level of detail refers to the beginning of the release time frame and takes the first period of this time frame into account. You can assign each level of detail its own distribution function.

You can see the result of your period split with the simulation This graphic is explained in the accompanying text in the period split profile maintenance. Since the data from the demand plan or InfoProvider is not available to the system at this point in time, you have to enter some data specifically for the simulation, such as the calendar.

You can enter the period split profile when you release data from an InfoProvider or when you release a demand plan to SNP or to an ERP system.

Distribution Function

To create a distribution function, on the SAP Easy Access screen, choose Advanced Planning and Optimization ® Demand Planning ® Environment ® Current Settings  ® Maintain Distribution Function.

Here you define the weighting factors for the distribution of demand quantities independent of time. The more weighting factors you specify in the distribution function, the exacter the distribution will be. The system always converts the weighting factors you specify so that the total is 100.

The weighting factors do not have a periodicity. The time reference is first made when you assign the distribution function in the period split profile.

Example

You want to release the demand quantities of a demand plan for the months January to June. The demand plan was calculated for quarters. You want the system to disaggregate the quantity of 900 pieces equally to week level for January and to month level for February and March.

In our example, January has 31 workdays, February has 28 workdays, and March has 31 workdays. The weeks in January look like this:

Period

Workdays

1/1 ‑ 2

2

1/3 ‑ 9

7

1/10 ‑ 16

7

1/17 ‑ 23

7

1/24 ‑ 30

7

1/31

1

When you release the demand plan to SNP, you use a period split profile with two levels of detail:

Level 1: quarter -> month, 1 period, distribution function: equal

Level 2: month -> week, 1 period, distribution function: equal

During the release, the quantity is distributed as follows:

Month

Period

Quantity (Pieces)

January

1/1 ‑ 2

20

 

1/3 ‑ 9

70

 

1/10 ‑ 16

70

 

1/17 ‑ 23

70

 

1/24 ‑ 30

70

 

1/31

10

February

2

280

March

3

310

 

 

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