You have set the SQL(BEHAVIOR) compiler directive option, but neglected to also set the SQL(TARGETDB) directive to a value of DB2, ORACLE, or MSSQLSERVER. SQL(BEHAVIOR) is dependent on SQL(TARGETDB).
Resolution:
Set the SQL(TARGETDB) compiler directive option to DB2, ORACLE, or MSSQLSERVER in addition to specifying the SQL(BEHAVIOR) directive option; then recompile the application.