Only one oVirt node can be added from Foreman v2.1 UI

While adding another oVirt node on Foreman v2.1 UI throws an error i.e. “Unable to save ERF42-7407 [Foreman::Exception]: 03e05f6a-8f92-4394-9ec5-87118e6e4adb is not valid, enter id or name ERF42-7407 [Foreman::Exception]: 03e05f6a-8f92-4394-9ec5-87118e6e4adb is not valid, enter id or name

Have anybody faced this issue or anybody have solution for the same?