Update the schedule assigned to a sequence

Assign a different schedule to the sequence. The schedule controls which days and time windows emails in this sequence are sent.

Pass <code>scheduleId</code> (hashed) in the body. The response returns the full assigned schedule (<code>id</code>, <code>name</code>, <code>timezone</code>, <code>isDefault</code>). Use Get Schedules to list the caller's available schedule IDs.