When you uninstall and then reinstall the same server node on the same machine, or when you install a new node on a new machine, you must reconfigure RSOE and recopy the RSOE trusted certificate. Record the original RSOE settings, so you can restore it through reconfiguration.
To back up the RSOE trusted certificate files, copy the UnwiredServer\RsoeCerts folder on each server node. To restore, copy the folder to the same location.
You can back up the certificates required for SSO and HTTPS test cases to allow quick restoration. These certificates are required only if the host crashes. For SSO, copy the license file provided by SAP to your recovery server or other separate host. For HTTPS, copy your license file from Relay Server to your recovery server or other separate host.