Cannot modify column '%1' in table '%2'

Item Value
SQLCODE -191
Constant SQLE_CANNOT_MODIFY
SQLSTATE 42W32
Sybase error code 230
ODBC 2 State 42000
ODBC 3 State 42000
Parameter 1 Name of the column that cannot be changed.
Parameter 2 Name of the table containing the column.

Probable cause 

You may have tried to modify a column that you do not have permission to modify. You may have tried to modify a column defined as an expression (such as column1+column2) in a view.