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/FRE/DIF_05 - Define DIF Schemas

PERFORM Short Reference   Vendor Master (General Section)  
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In this Customizing activity, you can define DIF schemas that can be used to calculate a specific safety amount during the validity period of DIF occurrences assigned to a schema.

You can assign one or more DIFs to a DIF schema. The forecast calculates a separate estimated forecast error per DIF schema and location product. The estimated forecast error is calculated based on all periods where an occurrence of the DIF(s) assigned to the schema is active. This estimated forecast error is the basis for the safety amount calculation for all future periods where an occurrence of the DIF(s) assigned to the schema is active. The periods where an occurrence of the DIF(s) assigned to the schema is active do not influence the regular estimated forecast error and safety amount calculation for periods where no occurrence of a DIF assigned to the schema is active.

In this way, you can achieve a more specific safety amount calculation for periods with special events such as promotions, since the variability of sales often changes in periods with such special events and thus a different safety amount yields in better replenishment quantities. Another effect of using a DIF schema is that the variability of periods with such special events does not have an effect on regular periods without such events .

It is possible to define several DIF schemas and to assign one or more DIFs to each schema. However, a DIF can only be assigned to one schema. Only Boolean DIFs can be assigned to a DIF schema.

In order to use the DIF schema functionality, the consideration of DIF schema has to be activated in the forecasting profile. This provides you with greater control of the DIF schema function, since you can use a forecast profile to activate the function for specific location products.

In this activity, you only enter a schema ID and a language-dependent text. You assign individual DIFs to a schema in the Customizing activity where you define Demand Influencing Factors.

Besides the pure definition of a DIF schema and assignment of DIF(s) to this schema, you can optionally maintain specific service levels per DIF schema that are only applied to periods where there are occurrences of the DIF(s) that are assigned to the schema are active in the service level profile. This provides you with greater control of the safety amount calculation for periods with special events. If no such specific service level is maintained, the system uses the regular service level that would have been applied without the DIF schema.

Another related feature is the high season schema. It works the same way as the DIF schema function but does not require the explicit definition of a schema. The periods for specific estimated forecast error and safety amount calculation are determined automatically as periods with seasonally high sales. You can activate this feature in the forecast profile as well.

Vendor Master (General Section)   RFUMSV00 - Advance Return for Tax on Sales/Purchases  
This documentation is copyright by SAP AG.

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