This gauge holds the numeric error code from a remote invocation made while this automatic core-file export FSM was running, part of the workflow that carries out the async workflow that sets up or runs that automatic core-file export. An admin treats a non-zero value as proof that a remote step of this operation failed, and looks up the code to learn the specific cause. For example, if the remote side of the workflow tracked by this automatic core-file export FSM rejects a request, that peer's error code shows up here for UCS Manager to record.