diff --git a/sma/integrationpluginsma.cpp b/sma/integrationpluginsma.cpp
index 0a79e200..399046e3 100644
--- a/sma/integrationpluginsma.cpp
+++ b/sma/integrationpluginsma.cpp
@@ -100,7 +100,7 @@ void IntegrationPluginSma::setupThing(ThingSetupInfo *info)
         connect(sunnyWebBox, &SunnyWebBox::parameterChannelsReceived, this, &IntegrationPluginSma::onParameterChannelsReceived);
         m_sunnyWebBoxes.insert(thing, sunnyWebBox);
         connect(info, &ThingSetupInfo::aborted, this, [thing, this] { m_sunnyWebBoxes.remove(thing);});
-        QUuid requestId = sunnyWebBox->getPlantOverview();
+        QString requestId = sunnyWebBox->getPlantOverview();
         m_asyncSetup.insert(requestId, info);
         return info->finish(Thing::ThingErrorNoError);
 
@@ -147,7 +147,7 @@ void IntegrationPluginSma::executeAction(ThingActionInfo *info)
         if (!sunnyWebBox)
             return;
         if (action.actionTypeId() == sunnyWebBoxSearchDevicesActionTypeId) {
-            QUuid requestId = sunnyWebBox->getDevices();
+            QString requestId = sunnyWebBox->getDevices();
             m_asyncActions.insert(requestId, info);
             connect(info, &ThingActionInfo::aborted, info, [requestId, this] {m_asyncActions.remove(requestId);});
         } else {
@@ -177,7 +177,7 @@ void IntegrationPluginSma::onRefreshTimer()
     }
 }
 
-void IntegrationPluginSma::onPlantOverviewReceived(const QUuid &messageId, SunnyWebBox::Overview overview)
+void IntegrationPluginSma::onPlantOverviewReceived(const QString &messageId, SunnyWebBox::Overview overview)
 {
     if (m_asyncSetup.contains(messageId)) {
         ThingSetupInfo *info = m_asyncSetup.value(messageId);
@@ -200,7 +200,7 @@ void IntegrationPluginSma::onPlantOverviewReceived(const QUuid &messageId, Sunny
     }
 }
 
-void IntegrationPluginSma::onDevicesReceived(const QUuid &messageId, QList<SunnyWebBox::Device> devices)
+void IntegrationPluginSma::onDevicesReceived(const QString &messageId, QList<SunnyWebBox::Device> devices)
 {
     if (m_asyncActions.contains(messageId)) {
         ThingActionInfo *info = m_asyncActions.value(messageId);
@@ -221,7 +221,7 @@ void IntegrationPluginSma::onDevicesReceived(const QUuid &messageId, QList<Sunny
     emit autoThingsAppeared(descriptors);
 }
 
-void IntegrationPluginSma::onProcessDataReceived(const QUuid &messageId, const QString &deviceKey, const QHash<QString, QVariant> &channels)
+void IntegrationPluginSma::onProcessDataReceived(const QString &messageId, const QString &deviceKey, const QHash<QString, QVariant> &channels)
 {
     Q_UNUSED(messageId)
     Thing *thing = m_sunnyWebBoxes.key(static_cast<SunnyWebBox *>(sender()));
@@ -240,7 +240,7 @@ void IntegrationPluginSma::onProcessDataReceived(const QUuid &messageId, const Q
     }
 }
 
-void IntegrationPluginSma::onParameterChannelsReceived(const QUuid &messageId, const QString &deviceKey, QStringList parameterChannels)
+void IntegrationPluginSma::onParameterChannelsReceived(const QString &messageId, const QString &deviceKey, QStringList parameterChannels)
 {
     Q_UNUSED(messageId)
 
diff --git a/sma/integrationpluginsma.h b/sma/integrationpluginsma.h
index 01185063..8d445d31 100644
--- a/sma/integrationpluginsma.h
+++ b/sma/integrationpluginsma.h
@@ -59,16 +59,16 @@ public:
 private slots:
     void onRefreshTimer();
 
-    void onPlantOverviewReceived(const QUuid &messageId, SunnyWebBox::Overview overview);
-    void onDevicesReceived(const QUuid &messageId, QList<SunnyWebBox::Device> devices);
-    void onProcessDataReceived(const QUuid &messageId, const QString &deviceKey, const QHash<QString, QVariant> &channels);
-    void onParameterChannelsReceived(const QUuid &messageId, const QString &deviceKey, QStringList parameterChannels);
+    void onPlantOverviewReceived(const QString &messageId, SunnyWebBox::Overview overview);
+    void onDevicesReceived(const QString &messageId, QList<SunnyWebBox::Device> devices);
+    void onProcessDataReceived(const QString &messageId, const QString &deviceKey, const QHash<QString, QVariant> &channels);
+    void onParameterChannelsReceived(const QString &messageId, const QString &deviceKey, QStringList parameterChannels);
 
 private:
     PluginTimer *m_refreshTimer = nullptr;
     QHash<Thing *, SunnyWebBox *> m_sunnyWebBoxes;
-    QHash<QUuid, ThingSetupInfo *> m_asyncSetup;
-    QHash<QUuid, ThingActionInfo *> m_asyncActions;
+    QHash<QString, ThingSetupInfo *> m_asyncSetup;
+    QHash<QString, ThingActionInfo *> m_asyncActions;
     SunnyWebBoxCommunication *m_sunnyWebBoxCommunication = nullptr;
 
     SunnyWebBox *createSunnyWebBoxConnection(Thing *thing);
diff --git a/sma/sunnywebbox.cpp b/sma/sunnywebbox.cpp
index ad4871c4..c687affb 100644
--- a/sma/sunnywebbox.cpp
+++ b/sma/sunnywebbox.cpp
@@ -44,31 +44,31 @@ SunnyWebBox::SunnyWebBox(SunnyWebBoxCommunication *communication, const QHostAdd
     connect(m_communication, &SunnyWebBoxCommunication::messageReceived, this, &SunnyWebBox::onMessageReceived);
 }
 
-QUuid SunnyWebBox::getPlantOverview()
+QString SunnyWebBox::getPlantOverview()
 {
     return m_communication->sendMessage(m_hostAddresss, "GetPlantOverview");
 }
 
-QUuid SunnyWebBox::getDevices()
+QString SunnyWebBox::getDevices()
 {
     return m_communication->sendMessage(m_hostAddresss, "GetDevices");
 }
 
-QUuid SunnyWebBox::getProcessDataChannels(const QString &deviceId)
+QString SunnyWebBox::getProcessDataChannels(const QString &deviceId)
 {
     QJsonObject params;
     params["device"] = deviceId;
     return m_communication->sendMessage(m_hostAddresss, "GetProcessDataChannels", params);
 }
 
-QUuid SunnyWebBox::getProcessData(const QStringList &deviceKeys)
+QString SunnyWebBox::getProcessData(const QStringList &deviceKeys)
 {
     QJsonObject params;
     params["device"] = deviceKeys.first();
     return m_communication->sendMessage(m_hostAddresss, "GetProcessData", params);
 }
 
-QUuid SunnyWebBox::getParameterChannels(const QString &deviceKey)
+QString SunnyWebBox::getParameterChannels(const QString &deviceKey)
 {
     QJsonObject paramsObj;
     QJsonArray devicesArray;
@@ -79,7 +79,7 @@ QUuid SunnyWebBox::getParameterChannels(const QString &deviceKey)
     return m_communication->sendMessage(m_hostAddresss, "GetParameterChannels", paramsObj);
 }
 
-QUuid SunnyWebBox::getParameters(const QStringList &deviceKeys)
+QString SunnyWebBox::getParameters(const QStringList &deviceKeys)
 {
     QJsonObject paramsObj;
     QJsonArray devicesArray;
@@ -90,7 +90,7 @@ QUuid SunnyWebBox::getParameters(const QStringList &deviceKeys)
     return m_communication->sendMessage(m_hostAddresss, "GetParameter", paramsObj);
 }
 
-QUuid SunnyWebBox::setParameters(const QString &deviceKey, const QHash<QString, QVariant> &channels)
+QString SunnyWebBox::setParameters(const QString &deviceKey, const QHash<QString, QVariant> &channels)
 {
     QJsonObject paramsObj;
     QJsonArray devicesArray;
@@ -119,7 +119,7 @@ QHostAddress SunnyWebBox::hostAddress()
     return m_hostAddresss;
 }
 
-void SunnyWebBox::onMessageReceived(const QHostAddress &address, const QUuid &messageId, const QString &messageType, const QVariantMap &result)
+void SunnyWebBox::onMessageReceived(const QHostAddress &address, const QString &messageId, const QString &messageType, const QVariantMap &result)
 {
     if (address != m_hostAddresss) {
         return;
diff --git a/sma/sunnywebbox.h b/sma/sunnywebbox.h
index 608771d2..ef20e0c4 100644
--- a/sma/sunnywebbox.h
+++ b/sma/sunnywebbox.h
@@ -75,13 +75,13 @@ public:
 
     explicit SunnyWebBox(SunnyWebBoxCommunication *communication, const QHostAddress &hostAddress, QObject *parrent = 0);
 
-    QUuid getPlantOverview(); // Returns an object with the following plant data: PAC, E-TODAY, E-TOTAL, MODE, ERROR
-    QUuid getDevices(); //Returns a hierarchical list of all detected plant devices.
-    QUuid getProcessDataChannels(const QString &deviceKey); //Returns a list with the meta names of the available process data channels for a particular device type.
-    QUuid getProcessData(const QStringList &deviceKeys); //Returns process data for up to 5 devices per request.
-    QUuid getParameterChannels(const QString &deviceKey); //Returns a list with the meta names of the available parameter channels for a particular device type
-    QUuid getParameters(const QStringList &deviceKeys); //Returns the parameter values of up to 5 devices
-    QUuid setParameters(const QString &deviceKeys, const QHash<QString, QVariant> &channels); //Sets parameter values
+    QString getPlantOverview(); // Returns an object with the following plant data: PAC, E-TODAY, E-TOTAL, MODE, ERROR
+    QString getDevices(); //Returns a hierarchical list of all detected plant devices.
+    QString getProcessDataChannels(const QString &deviceKey); //Returns a list with the meta names of the available process data channels for a particular device type.
+    QString getProcessData(const QStringList &deviceKeys); //Returns process data for up to 5 devices per request.
+    QString getParameterChannels(const QString &deviceKey); //Returns a list with the meta names of the available parameter channels for a particular device type
+    QString getParameters(const QStringList &deviceKeys); //Returns the parameter values of up to 5 devices
+    QString setParameters(const QString &deviceKeys, const QHash<QString, QVariant> &channels); //Sets parameter values
 
     void setHostAddress(const QHostAddress &address);
     QHostAddress hostAddress();
@@ -92,17 +92,17 @@ private:
     SunnyWebBoxCommunication *m_communication = nullptr;
 
 public slots:
-    void onMessageReceived(const QHostAddress &address, const QUuid &messageId, const QString &messageType, const QVariantMap &result);
+    void onMessageReceived(const QHostAddress &address, const QString &messageId, const QString &messageType, const QVariantMap &result);
 
 signals:
     void connectedChanged(bool connected);
 
-    void plantOverviewReceived(const QUuid &messageId, Overview overview);
-    void devicesReceived(const QUuid &messageId, QList<Device> devices);
-    void processDataChannelsReceived(const QUuid &messageId, const QString &deviceKey, QStringList processDataChanels);
-    void processDataReceived(const QUuid &messageId, const QString &deviceKey, const QHash<QString, QVariant> &channels);
-    void parameterChannelsReceived(const QUuid &messageId, const QString &deviceKey, QStringList parameterChannels);
-    void parametersReceived(const QUuid &messageId, const QString &deviceKey, const QList<Parameter> &parameters);
+    void plantOverviewReceived(const QString &messageId, Overview overview);
+    void devicesReceived(const QString &messageId, QList<Device> devices);
+    void processDataChannelsReceived(const QString &messageId, const QString &deviceKey, QStringList processDataChanels);
+    void processDataReceived(const QString &messageId, const QString &deviceKey, const QHash<QString, QVariant> &channels);
+    void parameterChannelsReceived(const QString &messageId, const QString &deviceKey, QStringList parameterChannels);
+    void parametersReceived(const QString &messageId, const QString &deviceKey, const QList<Parameter> &parameters);
 };
 
 #endif // SUNNYWEBBOX_H
diff --git a/sma/sunnywebboxcommunication.cpp b/sma/sunnywebboxcommunication.cpp
index de7ef31d..4be38276 100644
--- a/sma/sunnywebboxcommunication.cpp
+++ b/sma/sunnywebboxcommunication.cpp
@@ -33,6 +33,7 @@
 
 #include "QJsonDocument"
 #include "QJsonObject"
+#include <QUuid>
 
 SunnyWebBoxCommunication::SunnyWebBoxCommunication(QObject *parent) : QObject(parent)
 {
@@ -57,14 +58,14 @@ SunnyWebBoxCommunication::SunnyWebBoxCommunication(QObject *parent) : QObject(pa
     });
 }
 
-QUuid SunnyWebBoxCommunication::sendMessage(const QHostAddress &address, const QString &procedure)
+QString SunnyWebBoxCommunication::sendMessage(const QHostAddress &address, const QString &procedure)
 {
-    QUuid requestId = QUuid::createUuid();
+    QString requestId = QUuid::createUuid().toString().remove('{').left(14);
 
     QJsonDocument doc;
     QJsonObject obj;
     obj["format"] = "JSON";
-    obj["id"] = requestId.toString().remove('{').remove('}');
+    obj["id"] = requestId;
     obj["proc"] = procedure;
     obj["version"] = "1.0";
     doc.setObject(obj);
@@ -74,9 +75,9 @@ QUuid SunnyWebBoxCommunication::sendMessage(const QHostAddress &address, const Q
     return requestId;
 }
 
-QUuid SunnyWebBoxCommunication::sendMessage(const QHostAddress &address, const QString &procedure, const QJsonObject &params)
+QString SunnyWebBoxCommunication::sendMessage(const QHostAddress &address, const QString &procedure, const QJsonObject &params)
 {
-    QUuid requestId = QUuid::createUuid();
+    QString requestId = QUuid::createUuid().toString().remove('{').left(14);
 
     QJsonDocument doc;
     QJsonObject obj;
@@ -85,7 +86,7 @@ QUuid SunnyWebBoxCommunication::sendMessage(const QHostAddress &address, const Q
         obj.insert("params", params);
     }
     obj["format"] = "JSON";
-    obj["id"] = requestId.toString().remove('{').remove('}');
+    obj["id"] = requestId;
     obj["proc"] = procedure;
     obj["version"] = "1.0";
     doc.setObject(obj);
@@ -122,7 +123,7 @@ void SunnyWebBoxCommunication::datagramReceived(const QHostAddress &address, con
 
     if (map.contains("proc") && map.contains("result")) {
         QString requestType = map["proc"].toString();
-        QUuid requestId = QUuid(map["id"].toString());
+        QString requestId = map["id"].toString();
         QVariantMap result = map.value("result").toMap();
         emit messageReceived(address, requestId, requestType, result);
     } else {
diff --git a/sma/sunnywebboxcommunication.h b/sma/sunnywebboxcommunication.h
index 8ceb6ee9..c6a72a24 100644
--- a/sma/sunnywebboxcommunication.h
+++ b/sma/sunnywebboxcommunication.h
@@ -33,7 +33,6 @@
 
 #include <QObject>
 #include <QUdpSocket>
-#include <QUuid>
 
 class SunnyWebBoxCommunication : public QObject
 {
@@ -41,8 +40,8 @@ class SunnyWebBoxCommunication : public QObject
 public:
     explicit SunnyWebBoxCommunication(QObject *parent = nullptr);
 
-    QUuid sendMessage(const QHostAddress &address, const QString &procedure);
-    QUuid sendMessage(const QHostAddress &address, const QString &procedure, const QJsonObject &params);
+    QString sendMessage(const QHostAddress &address, const QString &procedure);
+    QString sendMessage(const QHostAddress &address, const QString &procedure, const QJsonObject &params);
 
 private:
     int m_port =  34268;
@@ -52,7 +51,7 @@ private:
 
 signals:
     void socketConnected(bool connected);
-    void messageReceived(const QHostAddress &address, QUuid messageId, const QString &messageType, const QVariantMap &result);
+    void messageReceived(const QHostAddress &address, const QString &messageId, const QString &messageType, const QVariantMap &result);
 
 };