Creating Where-Used Lists for Work Centers 
Use
The Plant Maintenance component enable you to create where-used lists for work centers. This is important,
The where-used list provides you with an overview of the task lists to which a specified work center has been assigned.
You can create a where-used list for all categories of maintenance task lists, that is, for general maintenance task lists, equipment task lists or functional location task lists.
You can generate an individual where-used list either for each task list type or for a specified number of all three task list types (from-to list).
Procedure
The screen Work Center Usage: Selection is displayed.
You see a pop-up window in which you can select the overview version you require. For more information, see
Pre-Setting Overview Variants.The system displays a list of all the elements corresponding to the object overview version and your selection criteria. This means that all the elements displayed contain the specified work center.
The system branches to the corresponding screen.