When you create activity hooks, you use the Activity Hooks tab page in the maintenance activity you want.

Each Activity Hooks tab page contains a table in which you associate a hook point activity with a hook point for that object.

When the hook point occurs, the system executes the associated activity. When the system executes hook point activities, the activities store and retrieve information in the database.

The table on the Activity Hooks tab page also contains a Sequence column.

If you assign the same sequence number and the same hook point to more than one activity, then when the hook point occurs, the system executes each activity in the order that it reaches the database.

To avoid unexpected results, we recommend that you use the system-generated sequence numbers to ensure that each object-level activity hook that is associated with the same hook point has a different sequence number.