You can create bill of material items as components for network activities and assign them by using the bill of material transfer (CN33). The requirement date of a new component is a result of the earliest or latest start or finish date of the activity when taking the activity-related time interval into account.
If an item is assigned to an activity whose relevant date lies in the past, requirements are created, if necessary, which are not taken into account in the planning horizon of requirements planning. To set the requirements date of new components to a realistic date, specify the time interval in days. In addition, if you set the indicator for determining the requirements date in the settings for bill of material transfer, the system calculates a realistic requirements date by adding the time interval you specified to the current date. For any new assignments, the system checks whether the requirements date for the activity is smaller than the calculated realistic date. If the check is positive, the system sets the requirements date of the component to the realistic requirements date, and flags it as a manually maintained date. The date is thereby not influenced by network scheduling.
Hierarchy 
SAP_APPL (Software Component) Logistics and Accounting
PS-MAT (Application Component) Material
CN_MAT (Package) Material for the project
Basic Data 
Data Type 
Further Characteristics 
Field Label 
Documentation 
History 
