Accessing SAP ECC6 from EP

Dear All,
Our Netweaver EP developer is requesting for SAP_ALL to access sap ecc6 system.
Are there any standard role from sap to support RFC call from Netweaver AS to SAP ECC6.
in reality the requirement is only to make web based application for editing personal user information.
Thanks and Regards
Syed Saifuddin

Hi Jurjen Heeck
I think my knowledge is very less so I did not express the requirement in my question.
Application built on Netweaver EP is a java web based application it can connect with Dev or Qty or Prd.
But for connecting to any system the Netweaver Server need a username in SAP.
now during development I can create a user having SAP_ALL in Development System.
Now the same application need to connect to Quality and then to Production.
So in Quality I want to restrict the user to only T-Code used in the portal application and those require for RFC communication.
I want to know is there any standard Role or T-Code so I can assign it to user to run application from EP.
Regards
Syed Saifuddin

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