diff --git a/api/src/org/apache/cloudstack/api/command/user/vm/DeployVMCmd.java b/api/src/org/apache/cloudstack/api/command/user/vm/DeployVMCmd.java
index 77b10ec0684d..cd949cd7faf7 100644
--- a/api/src/org/apache/cloudstack/api/command/user/vm/DeployVMCmd.java
+++ b/api/src/org/apache/cloudstack/api/command/user/vm/DeployVMCmd.java
@@ -474,7 +474,7 @@ public void execute() {
             response.setResponseName(getCommandName());
             setResponseObject(response);
         } else {
-            throw new ServerApiException(ApiErrorCode.INTERNAL_ERROR, "Failed to deploy vm");
+            throw new ServerApiException(ApiErrorCode.INTERNAL_ERROR, "Failed to deploy vm uuid:"+getEntityUuid());
         }
     }
 
@@ -556,7 +556,7 @@ public void create() throws ResourceAllocationException {
             VirtualMachineTemplate template = _entityMgr.findById(VirtualMachineTemplate.class, templateId);
             // Make sure a valid template ID was specified
             if (template == null) {
-                throw new InvalidParameterValueException("Unable to use template " + templateId);
+                throw new InvalidParameterValueException("Unable to find the template " + templateId);
             }
 
             DiskOffering diskOffering = null;
diff --git a/engine/orchestration/src/com/cloud/vm/VirtualMachineManagerImpl.java b/engine/orchestration/src/com/cloud/vm/VirtualMachineManagerImpl.java
index 9dea90a41d15..d87150d3ea57 100644
--- a/engine/orchestration/src/com/cloud/vm/VirtualMachineManagerImpl.java
+++ b/engine/orchestration/src/com/cloud/vm/VirtualMachineManagerImpl.java
@@ -985,7 +985,7 @@ public void orchestrateStart(final String vmUuid, final Map<VirtualMachineProfil
 
                 try {
                     if (!changeState(vm, Event.OperationRetry, destHostId, work, Step.Prepare)) {
-                        throw new ConcurrentOperationException("Unable to update the state of the Virtual Machine");
+                        throw new ConcurrentOperationException("Unable to update the state of the Virtual Machine "+vm.getUuid()+" oldstate: "+vm.getState()+ "Event :"+Event.OperationRetry);
                     }
                 } catch (final NoTransitionException e1) {
                     throw new ConcurrentOperationException(e1.getMessage());
@@ -1036,7 +1036,7 @@ public void orchestrateStart(final String vmUuid, final Map<VirtualMachineProfil
                         if (host_guid != null) {
                             final HostVO finalHost = _resourceMgr.findHostByGuid(host_guid);
                             if (finalHost == null) {
-                                throw new CloudRuntimeException("Host Guid " + host_guid + " doesn't exist in DB, something wrong here");
+                                throw new CloudRuntimeException("Host Guid " + host_guid + " doesn't exist in DB, something went wrong while processing start answer: "+startAnswer);
                             }
                             destHostId = finalHost.getId();
                         }
@@ -1044,7 +1044,8 @@ public void orchestrateStart(final String vmUuid, final Map<VirtualMachineProfil
                             syncDiskChainChange(startAnswer);
 
                             if (!changeState(vm, Event.OperationSucceeded, destHostId, work, Step.Done)) {
-                                throw new ConcurrentOperationException("Unable to transition to a new state.");
+                                s_logger.error("Unable to transition to a new state. VM uuid: "+vm.getUuid()+    "VM oldstate:"+vm.getState()+"Event:"+Event.OperationSucceeded);
+                                throw new ConcurrentOperationException("Failed to deploy VM"+ vm.getUuid());
                             }
 
                             // Update GPU device capacity
@@ -1080,9 +1081,9 @@ public void orchestrateStart(final String vmUuid, final Map<VirtualMachineProfil
                             if (answer == null || !answer.getResult()) {
                                 s_logger.warn("Unable to stop " + vm + " due to " + (answer != null ? answer.getDetails() : "no answers"));
                                 _haMgr.scheduleStop(vm, destHostId, WorkType.ForceStop);
-                                throw new ExecutionException("Unable to stop " + vm + " so we are unable to retry the start operation");
+                                throw new ExecutionException("Unable to stop this VM, "+vm.getUuid()+" so we are unable to retry the start operation");
                             }
-                            throw new ExecutionException("Unable to start " + vm + " due to error in finalizeStart, not retrying");
+                            throw new ExecutionException("Unable to start  VM:"+vm.getUuid()+" due to error in finalizeStart, not retrying");
                         }
                     }
                     s_logger.info("Unable to start VM on " + dest.getHost() + " due to " + (startAnswer == null ? " no start answer" : startAnswer.getDetails()));
@@ -1090,8 +1091,8 @@ public void orchestrateStart(final String vmUuid, final Map<VirtualMachineProfil
                         break;
                     }
 
-                } catch (final OperationTimedoutException e) {
-                    s_logger.debug("Unable to send the start command to host " + dest.getHost());
+                } catch (OperationTimedoutException e) {
+                    s_logger.debug("Unable to send the start command to host " + dest.getHost()+" failed to start VM: "+vm.getUuid());
                     if (e.isActive()) {
                         _haMgr.scheduleStop(vm, destHostId, WorkType.CheckStop);
                     }
diff --git a/server/src/com/cloud/vm/UserVmManagerImpl.java b/server/src/com/cloud/vm/UserVmManagerImpl.java
index 97eceaf4b43a..ecc2d6fe79da 100644
--- a/server/src/com/cloud/vm/UserVmManagerImpl.java
+++ b/server/src/com/cloud/vm/UserVmManagerImpl.java
@@ -2692,7 +2692,7 @@ public UserVm createAdvancedSecurityGroupVirtualMachine(DataCenter zone, Service
         if (networkIdList == null || networkIdList.isEmpty()) {
             Network networkWithSecurityGroup = _networkModel.getNetworkWithSGWithFreeIPs(zone.getId());
             if (networkWithSecurityGroup == null) {
-                throw new InvalidParameterValueException("No network with security enabled is found in zone id=" + zone.getId());
+                throw new InvalidParameterValueException("No network with security enabled is found in zone id=" + zone.getUuid());
             }
 
             networkList.add(_networkDao.findById(networkWithSecurityGroup.getId()));
@@ -3082,18 +3082,14 @@ protected UserVm createVirtualMachine(DataCenter zone, ServiceOffering serviceOf
                 Long physicalNetworkId = _networkModel.findPhysicalNetworkId(zone.getId(), ntwkOffering.getTags(),
                         ntwkOffering.getTrafficType());
                 if (physicalNetworkId == null) {
-                    s_logger.warn("Network id " + network.getId() + " could not be streched to the zone " + zone.getId()
-                            + " as valid phyical network could not be found");
                     throw new InvalidParameterValueException("Network in which is VM getting deployed could not be" +
-                            " streched to the zone.");
+                            " streched to the zone, as we could not find a valid physical network");
                 }
 
                 String provider = _ntwkSrvcDao.getProviderForServiceInNetwork(network.getId(), Service.Connectivity);
                 if (!_networkModel.isProviderEnabledInPhysicalNetwork(physicalNetworkId, provider)) {
-                    s_logger.warn("Network id " + network.getId() + " could not be streched to the zone " +zone.getId()
-                            + " as Connectivity service provider is not enabled in the zone " + zone.getId());
                     throw new InvalidParameterValueException("Network in which is VM getting deployed could not be" +
-                            " streched to the zone.");
+                            " streched to the zone, as we could not find a valid physical network");
                 }
             }
 
@@ -3488,7 +3484,8 @@ protected UserVm startVirtualMachine(DeployVMCmd cmd, Map<VirtualMachineProfile.
             UserVmVO tmpVm = _vmDao.findById(vm.getId());
             if (!tmpVm.getState().equals(State.Running)) {
                 // Some other thread changed state of VM, possibly vmsync
-                throw new ConcurrentOperationException("VM " + tmpVm + " unexpectedly went to " + tmpVm.getState() + " state");
+                s_logger.error("VM " + tmpVm + " unexpectedly went to " + tmpVm.getState() + " state");
+                throw new ConcurrentOperationException("Failed to deploy VM "+vm);
             }
         } finally {
             updateVmStateForFailedVmCreation(vm.getId(), hostId);
@@ -3699,7 +3696,7 @@ public UserVm stopVirtualMachine(long vmId, boolean forced) throws ConcurrentOpe
 
         // if account is removed, return error
         if (caller != null && caller.getRemoved() != null) {
-            throw new PermissionDeniedException("The account " + caller.getId() + " is removed");
+            throw new PermissionDeniedException("The account " + caller.getUuid() + " is removed");
         }
 
         UserVmVO vm = _vmDao.findById(vmId);