Error when inserting data into remote data base using dblink

Hi,

     I am using "insert into select" statament to insert data into remote data base using dblink. And the sql query has multiple column with case statement.But When I try to execute a query to insert data into remote data base,I am getting the below error.Can any one please let me know the cause of this error ?

SQL Error: ORA-02070: database  does not support  in this context
02070. 00000 -  "database %s%s does not support %s in this context"
*Cause:    The remote database does not support the named capability in
           the context in which it is used.
*Action:   Simplify the SQL statement.