diff --git a/login_server/src/cpp/JSONInterface/JsonSendEmail.cpp b/login_server/src/cpp/JSONInterface/JsonSendEmail.cpp
index c9e8b17e9..f278c393f 100644
--- a/login_server/src/cpp/JSONInterface/JsonSendEmail.cpp
+++ b/login_server/src/cpp/JSONInterface/JsonSendEmail.cpp
@@ -115,7 +115,7 @@ Poco::JSON::Object* JsonSendEmail::handle(Poco::Dynamic::Var params)
 				return stateWarning("email already sended");
 			}
 			else if (2 == r) {
-				return stateError("email already send less than a hour before");
+				return stateError("email already sent less than a 10 minutes before");
 			}
 		}
 		else if (emailType == model::EMAIL_CUSTOM_TEXT) {
diff --git a/login_server/src/cpp/lib/JsonRequest.cpp b/login_server/src/cpp/lib/JsonRequest.cpp
index 411ec07a0..09bbffb1e 100644
--- a/login_server/src/cpp/lib/JsonRequest.cpp
+++ b/login_server/src/cpp/lib/JsonRequest.cpp
@@ -36,6 +36,10 @@ JsonRequestReturn JsonRequest::request(const char* methodName, const Poco::JSON:
 	// send post request via https
 	// 443 = HTTPS Default
 	// TODO: adding port into ServerConfig
+	if (mServerHost.empty() || !mServerPort) {
+		addError(new Error(functionName, "server host or server port not given"));
+		return JSON_REQUEST_PARAMETER_ERROR;
+	}
 	try {
 		Profiler phpRequestTime;
 		
diff --git a/login_server/src/cpp/lib/JsonRequest.h b/login_server/src/cpp/lib/JsonRequest.h
index cfb9055d5..43b60ca40 100644
--- a/login_server/src/cpp/lib/JsonRequest.h
+++ b/login_server/src/cpp/lib/JsonRequest.h
@@ -20,6 +20,7 @@ enum JsonRequestReturn
 	JSON_REQUEST_RETURN_OK,
 	JSON_REQUEST_RETURN_PARSE_ERROR,
 	JSON_REQUEST_RETURN_ERROR,
+	JSON_REQUEST_PARAMETER_ERROR,
 	JSON_REQUEST_CONNECT_ERROR
 };
 
diff --git a/login_server/src/cpp/model/Session.cpp b/login_server/src/cpp/model/Session.cpp
index 42b7202fd..a692dc463 100644
--- a/login_server/src/cpp/model/Session.cpp
+++ b/login_server/src/cpp/model/Session.cpp
@@ -425,7 +425,7 @@ int Session::sendResetPasswordEmail(Poco::AutoPtr<controller::User> user, bool p
 	auto email_verification_model = mEmailVerificationCodeObject->getModel();
 	if (email_already_send) {
 		auto time_elapsed = Poco::DateTime() - email_verification_model->getUpdated();
-		if (time_elapsed.totalHours() < 1) {
+		if (time_elapsed.totalMinutes() < 10) {
 			frequent_resend = true;
 		}
 	}
diff --git a/login_server/src/cpp/test/JSONInterface/TestJsonCreateTransaction.cpp b/login_server/src/cpp/test/JSONInterface/TestJsonCreateTransaction.cpp
new file mode 100644
index 000000000..2a51f8f2e
--- /dev/null
+++ b/login_server/src/cpp/test/JSONInterface/TestJsonCreateTransaction.cpp
@@ -0,0 +1,51 @@
+#include "TestJsonCreateTransaction.h"
+
+#include "JSONInterface/JsonCreateTransaction.h"
+
+void TestJsonCreateTransaction::SetUp()
+{
+	auto sm = SessionManager::getInstance();
+	//sm->init();	
+	mUserSession = sm->getNewSession();
+	auto user = controller::User::create();
+	user->load("Jeet_bb@gmail.com");
+	user->login("TestP4ssword&H");
+	mUserSession->setUser(user);
+}
+
+void TestJsonCreateTransaction::TearDown()
+{
+	auto sm = SessionManager::getInstance();
+	if (!mUserSession) {
+		sm->releaseSession(mUserSession);
+	}
+}
+
+
+Poco::JSON::Object::Ptr TestJsonCreateTransaction::basisSetup()
+{
+	Poco::JSON::Object::Ptr params = new Poco::JSON::Object;
+	params->set("session_id", mUserSession->getHandle());
+	params->set("blockchain_type", "mysql");
+	params->set("memo", "Placolder for memo for test");
+	params->set("auto_sign", true);
+
+	return params;
+}
+
+TEST_F(TestJsonCreateTransaction, Creation)
+{
+	JsonCreateTransaction jsonCall;
+	
+	auto params = basisSetup();
+	params->set("transaction_type", "creation");
+	params->set("target_email", "Elfenhausen@arcor.de");
+	params->set("amount", 10000000);
+	params->set("target_date", "2021-07-13T13:00:00");
+	
+	auto result = jsonCall.handle(params);
+	std::stringstream ss;
+	result->stringify(ss);
+	printf("result: %s\n", ss.str().data());
+	//*/
+}
\ No newline at end of file
diff --git a/login_server/src/cpp/test/JSONInterface/TestJsonCreateTransaction.h b/login_server/src/cpp/test/JSONInterface/TestJsonCreateTransaction.h
new file mode 100644
index 000000000..53a3202f4
--- /dev/null
+++ b/login_server/src/cpp/test/JSONInterface/TestJsonCreateTransaction.h
@@ -0,0 +1,23 @@
+#ifndef __GRADIDO_LOGIN_SERVER_TEST_JSON_INTERFACE_TEST_JSON_CREATE_TRANSACTION_H
+#define __GRADIDO_LOGIN_SERVER_TEST_JSON_INTERFACE_TEST_JSON_CREATE_TRANSACTION_H
+
+#include "gtest/gtest.h"
+#include "SingletonManager/SessionManager.h"
+
+#include "Poco/JSON/Object.h"
+
+class TestJsonCreateTransaction : public ::testing::Test
+{
+
+protected:
+	void SetUp() override;
+	void TearDown() override;
+
+	Poco::JSON::Object::Ptr basisSetup();
+
+	Session* mUserSession;
+	std::string mEmail;
+
+};
+
+#endif //__GRADIDO_LOGIN_SERVER_TEST_JSON_INTERFACE_TEST_JSON_CREATE_TRANSACTION_H
\ No newline at end of file