Maintaining Instance Definitions 
Use
When you have defined the operation modes, you must maintain the instance definition.
It is also necessary to maintain instance definitions if, for example, server names or profiles were changed, or if new servers have been added.
Procedure
To change instance definitions:
To delete a server definition:
All data for that server is then deleted.
To delete an assignment to a work process:
Only the assignment to that work process is deleted.
To delete an operation mode:
The operation mode, and all the instances and work process definitions assigned to it, are deleted.

The automatically configured DUMMY operation mode is no longer needed once you have defined your operation modes. Delete the DUMMY operation mode as described above.
See also:
Assigning an Instance Definition to an Operation Mode Creating the Instance Definition for all Servers Creating the Instance Definition for one Server