Exactly as described, this sets the overall length of time this profile's test groups keep repeating per the configured interval, with the special indefinite value instead running the test group exactly once to completion rather than repeating on a schedule. Choosing indefinite versus a fixed duration is the difference between a long-running unattended soak test an operator checks in on periodically, and a single acceptance test expected to finish and report a result promptly, which changes how quickly a technician should expect a pass/fail outcome after starting the test instance. For example, a technician doing same-day circuit acceptance would pick indefinite for a single quick pass/fail run, while an engineer validating long-term link stability overnight would pick a 24-hour duration with a 1-hour interval instead.