fnd_request.submit_request

Hi,

Strange problem faced .  I am in 12.1.3 and yesterday started testing the fnd_request.submit_request code, wrote the simple code listed below and executed it TOAD which worked very well.  But today the same code is not working .  Could there be a reason about initializing the session?  Any help would be highly appreciated.

SET SERVEROUTPUT ON

DECLARE

v_request_id number;

BEGIN

FND_GLOBAL.APPS_INITIALIZE(15837,53062,401);

COMMIT;

v_request_id := fnd_request.submit_request(application => 'INV',

program => 'INVITEMORG_ASSIGN',

description => 'Item Organization Assignment',

start_time => SYSDATE,

sub_request => FALSE,

argument1 =>'',

argument2 =>5451,

argument3 =>83,

argument4=>1,

argument5=>101,

argument6=>'',

argument7=>'',