// the validation webhook would have already caught the invalid
			// code and we wouldn't reach here.
			out.Abort.ErrorType = &xdshttpfault.FaultAbort_GrpcStatus{
				GrpcStatus: uint32(grpc.SupportedGRPCStatus[a.GrpcStatus]),
			}
		default:
			log.Warnf("Only HTTP and gRPC type abort faults are supported")
			out.Abort = nil
		}
	}

	if out.Delay == nil && out.Abort == nil {
		return nil