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--- a/generator-vfos-io/templates/drivers/opc-ua/files/drivercomponent/opc_ua.js
+++ b/generator-vfos-io/templates/drivers/opc-ua/files/drivercomponent/opc_ua.js
@@ -42,7 +42,14 @@
             let sensorPropietaryId = sensorConf.propietaryParameters.find(item => item.name == "sensorPropietaryId").value;
 
             let dataValue = await session.readVariableValue(sensorPropietaryId);
-            return dataValue.value.value.toString();
+            
+            if (! dataValue.statusCode.value){
+                //assign status
+                return dataValue.value.value.toString();
+            }else{
+                //there is an error
+                throw dataValue.statusCode.description;
+            }
         },
         /**
          * method called by the Devide Driver SDK when subscribing to changes of a sensor