Child Concurrent Request goes to Inactive/No Manager

Hi,

Oracle EBS R12.1.3 and DB 11.2.0.4

Child Request goes into Inactive / No manager state while launching a child request from parent concurrent request

using FND_REQUEST.SUBMIT_REQUEST with clause   sub_request  =>  TRUE .

Below command I am used to fire the concurrent request thru PL/SQL stored Procedure.

l_request_id := FND_REQUEST.SUBMIT_REQUEST

                       (

                          application  => 'QP',

                          program      => 'QPXVBLK',

                          description  => 'ELECON/BENZLERS BULK IMPORT PRICE LIST',

                          start_time   =>  SYSDATE,

                          sub_request  =>  TRUE,

                          argument1    => 'PRL',                -- Entity

                          argument2    =>  l_pri_list_name ,    -- Entity Name

                          argument3    =>  NULL,                -- Process ID

                          argument4    =>  NULL,                -- Process Type

                          argument5    =>  NULL,                -- Processed Parent

                          argument6    =>  1,                   -- No of Threads