The materialized view %1 cannot be changed to immediate because it has already been initialized

Error constant SQLE_IMMEDIATE_MV_REFRESH_NOT_ALLOWED
ODBC 2 state 42000
ODBC 3 state ERROR
Parameter 1 Name of the materialized view.
Severity 14
SQLCODE -1170
SQLSTATE 42WC3
Sybase error code 13343
 Probable cause