Invalid day of week or month '%1' for event '%2'

Error constant SQLE_INVALID_EVENT_DAY
ODBC 2 state ERROR
ODBC 3 state ERROR
Parameter 1 Day-of-week name or day-of-month number.
Parameter 2 Name of the event being scheduled.
Severity 15
SQLCODE -791
SQLSTATE WE005
Sybase error code 13801
 Probable cause