Diagnosis
Schedule classes 2 and 3 require a schedule with an exact sequence ofday descriptions (either a day schedule from table T770B, or auser-defined schedule using the "user-defined schedule" function) sothat the exact day sequence can be reproduced in the calendar later.Specifying the business event duration in days and hours is notsufficient for schedule classes 2 and 3, but is permitted for scheduleclass 1.