The activities you enter as requirement activities can be connected to the project product structure and are used to determine the required dates for material when running the Gross Requirement Calculation (GRC) in the Project Product/Demand/MPL tab. Requirement activities are associated with project items in your delivery project. These activities must be pre-defined in the IFS/Project module.
Creating: You can register all activities for a project from IFS/Project as requirement activities.
Modifying: No data can be modified.
Removing: The activities are automatically deleted when the delivery project is removed. The activity object connections are automatically deleted when the delivery activities are removed. You cannot delete activities tied to a part or project item.