3.1.4.1.5.2 Setting a Reminder for the Sender

To enable the signaling of a reminder for the sender, the client MUST set the rtmReminder field to the required signal time and the fReminderSet field to TRUE in the PidTagSwappedToDoData property ([MS-OXOFLAG] section 2.2.1.7). The client sets the corresponding validity bits (0x00000040 and 0x00000080) to 1 in the dwFlags field in the PidTagSwappedToDoData property.