This read-create DisplayString specifies, when set, the local collection end date for a PM instance in [yy]yy-mm-dd or mm-dd format, per its description, defaulting to the current year if the year is omitted, and reporting the full formatted end date/time on read. Paired with cienaCesPmInstanceEndTime, this defines exactly when a bounded PM collection window closes, which matters for time-limited measurement campaigns rather than open-ended, ongoing monitoring instances. An engineer running a customer-requested one-week performance study would set this end date to exactly a week after the start date so the instance naturally stops collecting at the agreed cutoff.