You can only use this function if you use
As a result of requirements from the retail sector (SAP Retail), Release 4.0A includes the following new functions:
The following were not included in SAP Retail Release 1.2B:
This function enables you to calculate the requirements for the header material of a structured material from the requirements of the assigned components.
If you use time-phased planning for a header material, the system uses the listing conditions to determine whether the individual components have to be procured.
Otherwise, the system forecasts the component requirements and converts these to the requirements for the assigned header material. You can include your own calculation procedure for the header material conversion by using a user exit.