Problem in connecting NWCE7.2 with backend R3 and BI

Hello Gurus
I have installed the NWCE7.2 for creating a pilot in which i have to show the compsite application for BPM involving data from backend R3 and BI. I plan to use the Visual composer for developing the pilot
In Portal - System admin - System configuration, i have set to two system one for BI and one for R3. But when i am running the connection test for connectors it is failing consistently.
For BI system it is giving error - Connection failed make sure user mapping is correct.and all connection properties are correct
For R3 - system it is giving error - Connection failed make sure user mapping is correct.and all connection properties are correct
I am using my SAP account. I have created a portal UME account with the same id as my SAP ID and using SAP Logonticket
Since i am new , can any one give me step by step process to create successfully the connectors to connect to BI and R3.
I had followed the steps mentioned in Sap.help.com and followed all the steps without success.
In the help page - http://help.sap.com/saphelp_nwce72/helpdata/en/48/a80b7a516b35b6e10000000a42189d/frameset.htm
I have followed the Maintaining RFC Destinations & Maintaining BI Server Connectionsbut am consistently failing to connect and thus not use the Visual composer to use the RFCs for the pilot.
Do I have to do any other setting as well, am i missing some configuration as well.
Can someone please help me resolve this issue
Thanksing in adavnce
Raghu

Followed the help.sap.com and resolved the issue

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