diff --git a/src/main/java/com/icomsys/MessagingConnector.java b/src/main/java/com/icomsys/MessagingConnector.java
index c2f509e..a4293a3 100644
--- a/src/main/java/com/icomsys/MessagingConnector.java
+++ b/src/main/java/com/icomsys/MessagingConnector.java
@@ -77,8 +77,10 @@ public class MessagingConnector {
         try {
             ObjectMapper objectMapper = new ObjectMapper();
             Map<String, String> body = prepareRequestBody(messageSendRequest, objectMapper);
+            System.out.println("body : " + body);
 
             String jsonBody = objectMapper.writeValueAsString(body);
+            System.out.println("jsonbody : " + jsonBody);
 
             HttpRequest request = HttpRequest.newBuilder()
                     .uri(URI.create(url))
@@ -88,6 +90,9 @@ public class MessagingConnector {
                     .build();
 
             HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString());
+            System.out.println("responseCode : " + response.statusCode());
+            System.out.println("responseBody : " + response.body());
+            System.out.println("responseFull : " + response);
 
             if (response.statusCode() == 200) {
                 sejongMessageSendResponse = objectMapper.readValue(response.body(), SejongMessageSendResponse.class);