If you use budgeting and availability control and want to enter a transfer price agreement, you must divide your work breakdown structure (WBS) into subprojects. You can form subprojects for standard structures and operative structures.

You must first maintain identifiers for at least two subprojects. To call up structure planning, choose Logistics or Accounting ® Project System ® Basic data ® Project ® Special maintenance functions ® Work breakdown structure ® Subproject.

You have divided the project into subprojects and hence into different budget areas. Budgeting can now only be accessed using subprojects. When you access budgeting, you must specify a WBS element that has been defined as a subproject.