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WBS is nothing but Work Breakdown Structure. It is mainly used in Project System (PS) module. Tcode: CJ20N. For any project defined we must have atleast one WBS. Within this WBS we can have networks. Networks are nothing but the series of activities. Material are used to perform the activities.
Work Breakdown Structure Dictionary. The WBS Dictionary is a table or spreadsheet that is organized by project task and contains all project planning details. When to use WBS Dictionary. Small/Focused Projects: The WBS Dictionary is an ideal tool for consolidating and communicating the project plan on small or focused projects.