diff --git a/src/main/java/com/kiisoo/ic/synchronous/controller/SynchronousController.java b/src/main/java/com/kiisoo/ic/synchronous/controller/SynchronousController.java
index de6fd86..42141ee 100644
--- a/src/main/java/com/kiisoo/ic/synchronous/controller/SynchronousController.java
+++ b/src/main/java/com/kiisoo/ic/synchronous/controller/SynchronousController.java
@@ -80,6 +80,7 @@ public class SynchronousController {
     public String turnBack(@RequestBody List<TurnBackDTO> turnBackDTOS) {
         try {
             String str = JSON.toJSONString(turnBackDTOS);
+            System.out.println(str);
             for (TurnBackDTO turnBackDTO : turnBackDTOS) {
                 customerService.turnBack(turnBackDTO);
             }