Use
In the PM component, the maintenance task list header contains data that is valid for the entire maintenance task list. Typical header data is:

The system automatically copies the short text from the piece of equipment or functional location as a short text to the maintenance task list. You can overwrite this if necessary.
It is possible that you are not able to overwrite certain values that the system copies into the task list. These values originate from the master record of the work center you have entered in the task list, and are marked with a reference indicator. This indicator shows that these values are obligatory and cannot be overwritten at any point (for example, in a task list or maintenance order) where they refer to the work center.
Procedure
To do this, enter the number of the required assembly.
To do this, enter the number of the required construction type.
If you specify a construction type number here, the system selects all task lists that are valid for the reference object and all task lists that are valid for the construction type that is specified in the master data for the reference object, when performing an object-based search of task lists.
If you are creating an equipment or functional location task list, you can use a structure display to select the assembly. Use one of the following menu bar sequences:
If you enter the assembly number directly in an equipment or functional location task list and the system ascertains that the assembly does not belong to the bill of material for the piece of equipment or functional location, the system will issue an appropriate message. If you choose Continue the system will display a structure list from which you can select a valid assembly.