Including User Data in Operations/Sub-Operations 
Use
User data consists of all the fields that are defined using the customizing function and identified by a field key. They can be used to include additional, user-specific data for a particular operation or sub-operation.
You can define the following fields:
Procedure
The User data screen is displayed. The data that you have already entered for the operation/sub-operation is displayed here.

You can only use the keys that you have defined in Customizing.
The system will display the fields defined for this key.
If you have selected more than one operation or sub-operation, you can call them up using the menu bar sequence Operation
® Further operations ® Next operation.