Hi Amarnath;
The first option is to use native commands AS400, for this, your AS400 team should perform the following steps:
1) Validate privileges on the library R3<QAS>DATA and its objects for user <QAS>ADM and <QAS>GROUP and/or <QAS>OWNER
2) Delete the journal receiver in the library R3<QAS>JRN.
3) Create the journal receiver in the library R3<QAS>JRN.
4) Create the journal QSQJRN in the library R3<QAS>DATA.
5) Journaling Library R3<QAS>DATA.
6) Finally, use the following APIs to recreate the catalogs.
CALL QSYS2/QSQXRLF PARM('DLT' 'R3<PRD>DATA')
CALL QSYS2/QSQXRLF PARM('CRT' 'R3<QAS>DATA')
The second option is to use the AS4FIXFILE command from the SAP kernel as follows:
1) Validate privileges on the library R3<QAS>DATA and its objects for user <QAS>ADM and <QAS>GROUP and/or <QAS>OWNER.
2) Delete the journal receiver in the library R3<QAS>JRN. (Use DLTJRNRCV command)
3) Create the journal receiver in the library R3<QAS>JRN. (Use CRTJRNRCV command)
4) Create the journal QSQJRN in the library R3<QAS>DATA. (Use CRTJRN command)
5) With the <QAS>ADM user; run the following command:
AS4FIXFILE DBLIB(R3<QAS>DATA) CHGOWN(*YES) SYSTBL(*YES) ENDJRN(*YES) STRJRN(*YES)
I prefer the second option. Any question please let me know 
,
Regards.
Henry