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Time-Phased Special Procurement Key (AFS) 
Use
The apparel and footwear industry requires that requirements are transferred directly to specific plants. Special procurement keys are usually used for this. For example, the process step sewing is executed in a separate plant.
The function time-phased special procurement in AFS enables you to determine the delivering or manufacturing plant time-dependent for specific special procurement keys (40, 70, 80). That means that you redirect the source of supply depending on the time period.

This function is unlike that of the SAP standard, because the standard special procurement keys are maintained in the material master and create a fixed assignment to another plant.
Integration
This function has been integrated in the areas PP and MM.
Prerequisites
In order to work with time-phased special procurement keys, you must
Features
You can use this function with the following special procurement keys:
With this function you fill an AFS-specific table for AFS materials and the quota arrangement information for standard materials.
Activities
To use this function, do the following:

Make sure that the start and finish dates do not overlap.
AFS Restrictions
In the SAP standard you would start with the quota arrangement. This function is not supported by AFS. You can find further information in the standard documentation Quota Arrangements and Optimized Purchasing.