F4 search for GL accounts & cost centers doesn't work

Question

Dear SRM Gurus,
I've gone through the many threads in this forum regarding the RFC set up for the GL account & CC search. We've created the RFC destination and defined the user as a dialog user for this type of search. During the creation of a SC, SRM does validate to make sure the account & cc being used are valid, but when clicking on the binocular to search, we get the error message that says "Error while communicating with backend system. Inform system admin." Has anyone seen this error or know what could be the cause of such error?
We're on SRM 4.0 using the classic scenario and the backend system is 4.6b. I checked our customizing and I do see this RFC destination is linked to the BE system.
Thanks for any input.
SN

Answer 1

Hi,
Please ensure you have performed all the steps as per the above note you mentioned. Especially this one
6. Create a user and an authorization in the backend
     In Transaction SU01, create a new user (on the 'Logon data' tab, you should select user type 'Dialog' or 'Service').
     Call Transaction PFCG for the role maintenance and create your own role.
     In the role, select the 'Authorizations' tab and and choose the button to change the authorization.
     Do not select ANY template on the dialog box.
     Choose 'Manual'; then enter authorization object S_RFC and confirm the entry.
<b>&#61607;     Expand the authorization object and choose the pencil symbol for the 'Name of RFC to be protected'. Enter RHF4 and save the entry.</b>&#61607;     Choose the pencil symbol for the 'Type of RFC object to be protected', select the 'Function group' checkbox and save the change.
&#61607;     Generate and save the authorizations. Then return to the role.
&#61607;     On the 'User' tab, enter the user you have created and carry out a user comparison.
Then you can assign the (back-end) user to the RFC connection in the EBP Server.