On-Error Trigger in oracle Forms 11g

On-Error Triggger in Form level :- this is common for all form

DECLARE

BEGIN

   IF INSTR(DBMS_ERROR_TEXT, 'ORA-') = 1 AND DBMS_ERROR_CODE <> -1403

   THEN

      frmpkg_export.v_backend_err := 'Y';

   ELSIF  ERROR_CODE = 40401 OR ERROR_CODE = 40102 OR ERROR_CODE = 40405 OR ERROR_CODE = 41051

   THEN

   NULL;

   ELSE

     IF DBMS_ERROR_CODE <> 01403

     THEN

         message(ERROR_TEXT);

      END IF;

   END IF;

   

END;