diff --git a/README.md b/README.md
index 0ff36da..f33eb4a 100644
--- a/README.md
+++ b/README.md
@@ -168,3 +168,6 @@ It is possible to chain requests: [see doc](https://support.insomnia.rest/articl
 #### Install snowboard
 
 `npm install -g snowboard`
+
+## Possible checks
+  [here](https://gitlab.com/spaceti-app/integrations/acs/colnod-connector/blob/master/doc/possible-checks.md)
diff --git a/doc/possible-checks.md b/doc/possible-checks.md
new file mode 100644
index 0000000..add579c
--- /dev/null
+++ b/doc/possible-checks.md
@@ -0,0 +1,5 @@
+
+# Possible checks
+
+## Cases:
+- try to add new virtual token to subject who has no physical card
diff --git a/src/app/main.cpp b/src/app/main.cpp
index c3b24d8..836491d 100644
--- a/src/app/main.cpp
+++ b/src/app/main.cpp
@@ -13,9 +13,25 @@ int main(int argc, char *argv[])
     Logger *logger = Logger::getLogger();
     parser.setApplicationDescription("Colnod sync");
     QCommandLineOption dryModeOption("dryMode", "ColnodAPI", "Read-only mode, prints changes which would normally be made");
+    QCommandLineOption dropTablesOption("dropTables", "ColnodAPI", "Delete tables with datas from Colnod");
+    QCommandLineOption createTablesOption("createTables", "ColnodAPI", "Create tables to saving data from Colnod");
     parser.addOption(dryModeOption);
+    parser.addOption(dropTablesOption);
+    parser.addOption(createTablesOption);
     parser.process(app);
     SyncManager api(parser.isSet(dryModeOption));
+    QObject::connect(&api, &SyncManager::error, &app, [](){
+        qDebug() << "error";
+        QCoreApplication::exit(1);
+    }, Qt::QueuedConnection);
+    if (parser.isSet(dropTablesOption)){
+        api.dropTables();
+        return 0;
+    }
+    if (parser.isSet(createTablesOption)){
+            api.createTables();
+        return 0;
+    }
     api.loadDataFromDB();
     api.loadDataFromColnod();
     QObject::connect(&api, &SyncManager::dataDownloaded, [&](){
@@ -26,9 +42,5 @@ int main(int argc, char *argv[])
         api.syncDataFromColnodToDB();
         api.syncDataFromDBToColnod();
     });
-    QObject::connect(&api, &SyncManager::error, &app, [](){
-        qDebug() << "error";
-        QCoreApplication::exit(1);
-    }, Qt::QueuedConnection);
     return QCoreApplication::exec();
 }
diff --git a/src/colnod/databasemanager.cpp b/src/colnod/databasemanager.cpp
index 6e06145..74e493c 100644
--- a/src/colnod/databasemanager.cpp
+++ b/src/colnod/databasemanager.cpp
@@ -186,19 +186,19 @@ void DatabaseManager::createTables()
                         "deleted BOOLEAN)");
     executeQuery(query, "CREATE TABLE colnod_token ("
                         "id CHAR(36) primary key NOT NULL,"
-                        "auth_errors INTEGER NOT NULL,"
+                        "auth_errors INTEGER DEFAULT 255,"
                         "description VARCHAR(255),"
-                        "enabled BOOLEAN NOT NULL,"
-                        "last_update timestamp NOT NULL,"
+                        "enabled BOOLEAN DEFAULT true,"
+                        "last_update timestamp DEFAULT '1970-01-01 00:00:00'::timestamp without time zone,"
                         "name VARCHAR(255),"
-                        "no_validity BOOLEAN NOT NULL,"
-                        "time_to_live INTEGER NOT NULL,"
-                        "token_bits INTEGER,"
+                        "no_validity BOOLEAN DEFAULT true,"
+                        "time_to_live INTEGER DEFAULT 255,"
+                        "token_bits INTEGER DEFAULT 32,"
                         "token_data VARCHAR(255),"
-                        "token_type VARCHAR(255),"
+                        "token_type VARCHAR(255) DEFAULT 'Token'::character varying,"
                         "subject_id CHAR(36),"
-                        "last_modified timestamp,"
-                        "deleted BOOLEAN)");
+                        "last_modified timestamp NOT NULL,"
+                        "deleted BOOLEAN DEFAULT false)");
     executeQuery(query, "CREATE TABLE colnod_subject_attribute ("
                         "id VARCHAR(255) primary key,"
                         "attribute_key VARCHAR(255),"
@@ -307,6 +307,15 @@ bool DatabaseManager::checkDeletedToken(const QString &id)
     return query.value(0).toBool();
 }
 
+qint16 DatabaseManager::getNumOfTokensOfSubject(const QString &id)
+{
+    QSqlQuery query;
+    query.prepare("SELECT 1 FROM colnod_token WHERE subject_id = :id AND deleted = false");
+    query.bindValue(":id", id);
+    executeQuery(query);
+    return static_cast<qint16>(query.size());
+}
+
 bool DatabaseManager::isOpen()
 {
     return opened;
diff --git a/src/colnod/databasemanager.h b/src/colnod/databasemanager.h
index f95a9d4..74fc989 100644
--- a/src/colnod/databasemanager.h
+++ b/src/colnod/databasemanager.h
@@ -40,6 +40,8 @@ public:
     QString getSubjectNameById(const QString &id);
     bool checkDeletedToken(const QString &id);
 
+    qint16 getNumOfTokensOfSubject(const QString &id);
+
     bool isOpen();
 
 
diff --git a/src/colnod/datamanager.cpp b/src/colnod/datamanager.cpp
index 3d81721..7a0dd6b 100644
--- a/src/colnod/datamanager.cpp
+++ b/src/colnod/datamanager.cpp
@@ -9,7 +9,7 @@ DataManager::DataManager(const bool &dryMode) :
         nextLastSync = db->getNow();
         lastSync = db->getLastSync();
     }
-    connect(db.get(), &DatabaseManager::error, this, &DataManager::error);
+    connect(db.get(), &DatabaseManager::error, this, &DataManager::error, Qt::QueuedConnection);
 }
 
 // load all tokens from colnod to comparing with working set from DB
@@ -84,6 +84,13 @@ void DataManager::fillTokensToChangeDB()
         {
             auto token = std::make_shared<Token>();
             token->fromSQLRecord(query);
+            if (token->getName() == NULL){
+                qint16 num = db->getNumOfTokensOfSubject(token->subjectIdToStringWithoutBraces());
+                token->setName(db->getSubjectNameByTokenId(token->idToStringWithoutBraces()) + "_mobile_" + QString::number(num + 1));
+                token->setDescription("mobile");
+                token->setLastUpdate(token->getLastModified());
+                db->saveToken(token, "colnod_token");
+            }
             if (token->getDeleted()){                   // sort to delete / to update
                 tokensFromDBToDeleteFromColnod.append(token->idToStringWithoutBraces());
             }
@@ -252,10 +259,26 @@ void DataManager::setDeletedToTokensFromDB()
 }
 
 // recreate working tables
-void DataManager::emptyDatabase()
+void DataManager::dropTables()
 {
-    db->dropTables();
-    db->createTables();
+    if (db->isOpen()){
+        db->dropTables();
+    }
+    else{
+        emit error();
+    }
+}
+
+
+void DataManager::createTables()
+{
+    if (db->isOpen()){
+        db->createTables();
+        db->updateLastSync(0);
+    }
+    else{
+        emit error();
+    }
 }
 
 quint64 DataManager::getLastModifiedOfToken(const QString &id)
diff --git a/src/colnod/datamanager.h b/src/colnod/datamanager.h
index d3e94ac..1793cf8 100644
--- a/src/colnod/datamanager.h
+++ b/src/colnod/datamanager.h
@@ -38,7 +38,9 @@ public:
 
     void updateLastSync();
 
-    void emptyDatabase();
+    void dropTables();
+
+    void createTables();
 
     quint64 getLastModifiedOfToken(const QString &id);
 
diff --git a/src/colnod/syncmanager.cpp b/src/colnod/syncmanager.cpp
index 29dcf07..1c72bd8 100644
--- a/src/colnod/syncmanager.cpp
+++ b/src/colnod/syncmanager.cpp
@@ -5,8 +5,8 @@ SyncManager::SyncManager(bool dryMode) :
     dataMan( std::make_unique<DataManager>(dryMode)),
     dryMode(dryMode)
 {
-    connect(reqMan.get(), &RequestManager::error, this, &SyncManager::error);
-    connect(dataMan.get(), &DataManager::error, this, &SyncManager::error);
+    connect(reqMan.get(), &RequestManager::error, this, &SyncManager::error, Qt::QueuedConnection);
+    connect(dataMan.get(), &DataManager::error, this, &SyncManager::error, Qt::QueuedConnection);
 }
 
 void SyncManager::loadDataFromColnod()
@@ -180,9 +180,14 @@ void SyncManager::syncDeletedDataFromDBToColnod()
 }
 
 // For full sync
-void SyncManager::prepareDatabase()
+void SyncManager::dropTables()
 {
-    dataMan->emptyDatabase();
+    dataMan->dropTables();
+}
+
+void SyncManager::createTables()
+{
+    dataMan->createTables();
 }
 
 bool SyncManager::isValid()
diff --git a/src/colnod/syncmanager.h b/src/colnod/syncmanager.h
index f39db10..33a9df6 100644
--- a/src/colnod/syncmanager.h
+++ b/src/colnod/syncmanager.h
@@ -14,7 +14,8 @@ public:
     void syncDataFromColnodToDB();
     void syncDataFromDBToColnod();
 
-    void prepareDatabase();
+    void dropTables();
+    void createTables();
 
     bool isValid();
 
diff --git a/src/colnod/token.cpp b/src/colnod/token.cpp
index aa22cad..ff3b573 100644
--- a/src/colnod/token.cpp
+++ b/src/colnod/token.cpp
@@ -3,18 +3,13 @@
 #include <QJsonArray>
 #include <utility>
 
+
 Token::Token(const QString& name, QString tokenData, const QString& decription)
 {
     this->setName(name);
     this->tokenData = std::move(tokenData);
     this->setDescription(decription);
     this->setId(QUuid::createUuid());
-    this->tokenType = "Token";
-    this->tokenBits = 32;
-    this->timeToLive = 255;
-    this->authErrors = 255;
-    this->flags = {"Enabled", "NoValidity"};
-
 }
 
 Token::Token(const QString &name)
@@ -35,6 +30,7 @@ void Token::fromJSON(const QJsonObject &json) {
     timeToLive = json["timeToLive"].toInt();
     authErrors = json["authErrors"].toInt();
     const auto &flagsArray = json["flags"].toArray();
+    flags.clear();
     for(const auto &flag : flagsArray){
         flags.insert(flag.toString());
     }
diff --git a/src/colnod/token.h b/src/colnod/token.h
index bce4c69..9d49cbf 100644
--- a/src/colnod/token.h
+++ b/src/colnod/token.h
@@ -11,6 +11,16 @@ class Token : public Entity {
 public:
     // using Entity::Entity;
 
+    /**
+        * # Needed values to proper sync
+        *
+        * * id - primary key
+        * * lastModified - when it was edited/modified
+        * * tokenData - key to open doors
+        * * subjectId - no way of make unassinged token (token without subject)
+        *
+        */
+
     Token() = default;
     Token(const QString& name, QString tokenData, const QString& decription = "mobile");
     explicit Token(const QString& name);
@@ -60,11 +70,11 @@ public:
     QJsonObject toJSON() const override;
 
 private:
-    QString tokenType;
-    int tokenBits{};
+    QString tokenType = "Token";
+    int tokenBits = 32;
     QString tokenData;
-    int timeToLive{};
-    int authErrors{};
-    QSet<QString> flags;
+    int timeToLive = 255;
+    int authErrors = 255;
+    QSet<QString> flags = {"NoValidity", "Enabled"};
     QUuid subjectId;
 };