Hi Maheswari,
Check SAPOSS rfc connection using SM59 and test connection.
In Technical settings Tab
Load balancing = Yes
Target system = OSS
Msg. Server = /H/172.10.18.31/S/sapdp99/H/194.39.131.34/S/sapdp99/H/oss001
(please replace 172.10.18.31 with your SAP Router's local IP address)
Group = EWA
Save to Database as = select IP Address
In Logon&Security
Language = EN
Client = 001
User = OSS_RFC
Password = CPIC (this is case sensitive, so give all caps)
Best Regards,
Parth Raval