Hi Bharat,
From the logs
1EETQ399 Last error code set is: RFC error system XYZ nr 12 function 'RFC_DESTINATION_CREATE' failed with code 3 key CALL_FUNCTION_REMOTE_ERROR: Name or password is inc
orrect (repeat logon)
Looks like some problem with user / password for DDIC.
Please check on DB level whether DDIC user is unlocked ?
SQL> select bname, uflag from <schema>.USR02 where mandt=000 and bname='DDIC';
Regards,
Deepak Kori