Hi Vanita,
Please share the SAP Business Objects Version details and also Refer PAM regarding compatibility.
Above error occurs mostly regarding Patch Level issue, You can also check Adaptive Processing Services status regarding that error, Please refer below KBA & Links for this issue.
1694041 - BI 4.0 Consulting:- How to size the Adaptive Processing Server
https://service.sap.com/sap/support/notes/1694041
SCN Thread:
https://scn.sap.com/thread/3149261
http://scn.sap.com/thread/3457546
In order to retrieve data into your universe, you need to create a new secured connection to an SAP ERP system.
For more info find the below link's
http://scn.sap.com/docs/DOC-44431
http://scn.sap.com/blogs/sbuda/2012/09/03/ecc-universe-based-on-sap-query
Step By Step Guide to Create an Universe on Top of SAP ERP Queries using IDT
http://scn.sap.com/docs/DOC-44431
Not able to connect ECC in IDT.
http://scn.sap.com/thread/3585044
Thanks,
Daya