Cannot insert or update computed column '%1'

Item Value
SQLCODE -703
Constant SQLE_COMPUTED_COLUMN_WRITE_ATTEMPTED
SQLSTATE WW023
Sybase error code 4406
ODBC 2 State ERROR
ODBC 3 State ERROR
Parameter 1 The name of the column.

Probable cause 

Computed column values cannot be modified explicitly. Their value is determined implicitly from the computed expression value.