You can only connect operations using relationships. You cannot connect sub-operations with one another. In maintenance task list processing, you must first create a task list with operations, before you can connect the individual operations.

You can create relationships for all three types of maintenance task list. However, you can only connect the operation within one individual task list.

The following prerequisites must be met before you can create and maintain relationships:

• The profile for standard networks and networks must be set using the Customizing function so that the profile group, name, relationships and the specifications for graphic display appear on your screen.
• A maintenance task list must be created.
• The maintenance task list must contain several operations.
• You may not use the task list group in which the operations should be connected for planned maintenance, in other words, as soon as you have entered maintenance strategy in the maintenance task list header, you may no longer connect the operations with one another using relationships.