OptionalacquisitionOptionalidThe session ID.
OptionalrenewalThe date at which this session ID was last reported. This value should be updated whenever telemetry is sent using this ID. Per the spec the ID will be regenerated if more than renewalSpan milliseconds elapse from this time with no activity.
The date at which this guid was generated. Per the spec the ID will be regenerated if more than acquisitionSpan milliseconds elapsed from this time.