The Target Constraint is applicable when events are created, moved or modified, to verify that there is no contradiction with other pre-existing events.
The target constraint is used to verify that a quantity is not exceeded for a set of events over a pre-defined period of time. This verification can be carried out on a set of resources or even, one resource at a time.
The target constraint may be one of three forms:
- The creation or modification of an event is prohibited;
- Warnings, via a message, that the actions undertaken do not remain within the constraint;
- Authentication, via a message, that the user has re-entered their password.
The target constraint is applied using three filters: