If indexes already exist on the table, a list of these indexes is displayed.
The maintenance screen for indexes appears.
You can use the short description to find the index at a later time, for example using the Information System.
A list of all the available table fields appears.
The order of the fields in the index is important. For more information, see Special Features of Secondary Indexes
The system always creates a unique index in the database at activation because it also has a functional meaning (prevents double entries of the index fields).
In this case, you can use the radio buttons under Non-unique index to define whether the index must be created for all database systems, for selected database systems, or not at all in the database.
A dialog box appears in which you can define up to four database systems with the input help. Select Selection list if the index must be created only on the given database systems. Select Exclusion list if the index must not be created on the given database systems.
The secondary index is automatically created on the database during activation, if the corresponding table has already been created there and the index creation was not excluded for the database system.
You can find information about the activation flow in the activation log. To call the activation log choose Utilities → Activation log. If errors occur when activating the index, the activation log is automatically displayed.