diff --git a/Service/Execute/Step/StationReadyState.cs b/Service/Execute/Step/StationReadyState.cs
index 3fb1d07..1166baf 100644
--- a/Service/Execute/Step/StationReadyState.cs
+++ b/Service/Execute/Step/StationReadyState.cs
@@ -213,7 +213,9 @@ public class StationReadyState : IState
                 var machineRfidReadModel = rfidReadModel.Result;
                 
                 
-                if ( rfidReadModel.IsCompletedSuccessfully && machineRfidReadModel != null && machineRfidReadModel.Result==1)
+                if ( rfidReadModel.IsCompletedSuccessfully && machineRfidReadModel != null 
+                                                           && machineRfidReadModel.Result==1
+                                                           && !string.IsNullOrEmpty(machineRfidReadModel.VelVin))
                 {
                     machine.RfidReadModel = machineRfidReadModel;
                     _log.Info($"read rfid={JsonConvert.SerializeObject(machine.RfidReadModel)}");