Presizing 
Presizing
Use
Various forms of presizing are supported in the following areas:
Presizing in Planned Independent Requirements
Presizing lets you automatically spread requirements based on
distribution profiles to different:This can be done without distribution profiles or increasing certain factors, for example, categories, grid values or periods.
When you carry out presizing, the system searches for the relevant distribution profile based on the plant and category for one or more materials, recalculates the quantities based on the distribution profile, then rounds all values according to the settings. From the maintenance transaction for the planned independent requirements, you can manually choose a rounding strategy, distribution profile per factor and target period, for example, when running presizing in the system. If no corresponding distribution profile version is determined for a factor, the requirements are evenly distributed for the valid factor (for example, plant, category, period and grid value). When running presizing in your system, you can also change the requirement quantities by using all four factors at the same time. You can determine different distribution profile versions for each individual factor.
You can copy requirements to new versions of the planned independent requirements as soon as presizing has been run in the system. Alternatively, you can replace existing versions. You can also work with requirement plans.
Presizing for Single or Multiple Materials
There are two main methods for running presizing for planned independent requirements. You can access presizing from planned independent requirements maintenance, or carry out presizing for multiple materials.
You can use distribution profiles to define customers’ purchasing behavior, for example. If customers usually purchase more goods at the end of the week, you can define the distribution profile to put more weigh on delivery dates at the end of the week or you can distribute more quantities to a certain plant or category.
Planned Independent Requirement Versions
You can maintain different versions of planned independent requirements and run presizing for all versions together or for each version separately.
Prerequisites
You have to assign a default distribution version for all applications that use presizing. The default version can be assigned at client or plant level (in Customizing) or in the material master record.
Example: Presizing for Planned Independent Requirements for Plants
In this example, you define a distribution profile to define the requirements for individual plants.
When you carry out presizing in the maintenance function for planned independent requirements, you must define the plants and categories. You can, however, choose if you also want to run presizing for grid values and periods.