Project System (PS)

Internal organizational unit in the Project System, used to divide a work breakdown structure (WBS) into different responsibility areas.

Subprojects thus form the organizational basis for decentralized project management.

You can divide a WBS into areas, assigning separate budget responsibility to each area.

These areas consist of WBS elements which are linked in the hierarchy, so forming a subtree within the overall WBS. This is called a subproject and is separately identified.

Each subproject has an identifier. No two subprojects with the same project definition may have the same identifier, however, you can use the same subproject identifier in different project definitions.

The subproject identifier is stored in the WBS element. It is passed on if you later subdivide the WBS element further.