Tools -> Copy Functionality fails

If your R12 Tools -> Copy Functionality fails with the following error message:

An error occurred while attempting to establish an Applications File Server connection with the node FNDFS_. There may be a network configuration problem, or the TNS listener on node FNDFS_ may not be running. Please contact your system administrator.

Then ensure that the following profile options have the desired value

a) "RRA: Enabled" should be set to "Yes"

b) "RRA: Service Prefix" should be null-ed out , no spaces allowed

After making the changes, Log-out and Login back and retest the issue.