This text field gives the human-readable description that accompanies the remote-invocation error code recorded for the FSM running on the port-discovery object that runs the neighbor-discovery process for a fabric-interconnect port. An administrator relies on fsmRmtInvErrDescr to understand a failed step on this PortDiscover instance without having to look up what a bare numeric error code means. For example, fsmRmtInvErrDescr might explain that a remote call to a peer component timed out, immediately telling the operator to check connectivity rather than local configuration.