Project Definition
In this lesson you will learn about the structure and fundamental characteristics of the objects in a work breakdown structure.
You create a project definition automatically when you create a work breakdown structure. A project definition defines an objective to be achieved within a project. The project definition sets the frame and type of project work to be carried out.
The Work Breakdown Structure (WBS) elements are used to structure the work and responsibilities, whereas networks and network activities are used to map the process of the project work. When you create the project definition, you do not yet need to create WBS elements or individual activities. The project definition is the framework for all objects within a project in later planning phases.
The project definition contains default values and profile data for WBS elements, such as assignments to particular organizational units in the SAP system. Default data is transferred to new WBS elements you create for this project. The basic dates for the entire project and the planning parameters for costs, budget, and dates are stored at the project definition level.
The figure below shows the structure of a project consisting of project definition and WBS elements.

Caution
A project definition is not an account assignment object (that is, you cannot post to it).Work Breakdown Structure (WBS)
Creating Work Breakdown Structures (WBS)
Note
See the following video to learn more about creating a work breakdown structure:In the quotation phase of a project, you can simulate projects using simulation versions, even if an operative project does not yet exist. It is possible to plan several simulation versions. You can then decide which version is the most suitable to transfer to an operative project.
Note
Simulation versions are discussed in the lesson Create and Transfer Simulation Versions.
Direct methods of WBS creation are as follows:
Create Network
Project Builder