how to raise concurrent request using trigger in oracle apps

CREATE OR REPLACE TRIGGER XX_TRIGGER
AFTER UPDATE
ON TABLE_NAME
REFERENCING NEW AS NEW OLD AS OLD
FOR EACH ROW
WHEN (
NEW.ATTRIBUTE!=old.ATTRIBUTE and
NEW.VALUE!=OLD.VALUE)

DECLARE
 l_appl_id             NUMBER;
   l_appl_name           VARCHAR2 (100) := 'WIP';
   l_user_id             NUMBER;
   l_user_name           VARCHAR2 (100) := 'USER_NAME;
   l_responsibility_id   NUMBER;
   l_resp_name           VARCHAR2 (200) := 'WORK IN PROCESS';
   ln_request_id NUMBER;  
 
   PRAGMA AUTONOMOUS_TRANSACTION;
BEGIN
 

-- To get the Application ID of given Application. ----   401
   SELECT application_id INTO l_appl_id FROM fnd_application
    WHERE application_short_name = l_appl_name;

-- To get the User ID information of  given user --
   SELECT user_id INTO l_user_id FROM fnd_user
    WHERE user_name = l_user_name;

-- To get the Resp ID information of the given responsibility.----
 SELECT responsibility_id INTO l_responsibility_id FROM fnd_responsibility_tl
    WHERE responsibility_name = l_resp_name AND application_id = l_appl_id and language='US';

--Initialixze the Application to use the API.
   fnd_global.apps_initialize (l_user_id,l_responsibility_id , l_appl_id);

ln_request_id :=
            fnd_request.submit_request ('WIP',--application_short_name
                                        'XXABVCS',--conc prog short name
                                        'XX WIP CONC PROGRAM',--description of conc program
                                        NULL,
                                        FALSE,
                                        --parameter1
                                        --parameter2
                                        1150583
                                        )
                                        ;
      COMMIT;

  /*IF ln_request_id = 0
  THEN
     DBMS_OUTPUT.PUT_LINE ('Concurrent Request Failed to Submit.');
  ELSE
     DBMS_OUTPUT.PUT_LINE('Successfully Submitted the Concurrent Request. Request Id: '||ln_request_id);
  END IF;*/

EXCEPTION
WHEN OTHERS THEN
  DBMS_OUTPUT.PUT_LINE('Error While Submitting Concurrent Request '||TO_CHAR(SQLCODE)||'-'||SQLERRM);
NULL;
END;