Use Case Element Description Use Case Number ID to represent your use case Application What system or application does this pertain to Use Case Name The name of your use case, keep it short and sweet Use Case Description Elaborate more on the name, in paragraph form. Primary Actor Who is the main actor that this use case represents Precondition What preconditions must be met before this use case can start Trigger What event triggers this use case Basic Flow The basic flow should be the events of the use case when everything is perfect; there are no errors, no exceptions. This is the "happy day scenario". The exceptions will be handled in the "Alternate Flows" section. Alternate Flows The most significant alternatives and exceptions