diff --git a/src/main/java/com/interplug/qcast/batch/system/AdminUserConfiguration.java b/src/main/java/com/interplug/qcast/batch/system/AdminUserConfiguration.java
index 15d71ffd..d071c82f 100644
--- a/src/main/java/com/interplug/qcast/batch/system/AdminUserConfiguration.java
+++ b/src/main/java/com/interplug/qcast/batch/system/AdminUserConfiguration.java
@@ -71,7 +71,12 @@ public class AdminUserConfiguration implements JobExecutionListener {
 
   @Bean
   public ItemProcessor<AdminUserSyncResponse, AdminUserSyncResponse> adminUserProcessor() {
-    return item -> item;
+    return item -> {
+      if (item.getCategory() != null && item.getCategory().length() > 20) {
+        item.setCategory(item.getCategory().substring(0, 20));
+      }
+      return item;
+    };
   }
 
   @Bean
diff --git a/src/main/java/com/interplug/qcast/config/Exception/GlobalExceptionHandler.java b/src/main/java/com/interplug/qcast/config/Exception/GlobalExceptionHandler.java
index 3d556324..85f85bfb 100644
--- a/src/main/java/com/interplug/qcast/config/Exception/GlobalExceptionHandler.java
+++ b/src/main/java/com/interplug/qcast/config/Exception/GlobalExceptionHandler.java
@@ -1,6 +1,7 @@
 package com.interplug.qcast.config.Exception;
 
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.HttpRequestMethodNotSupportedException;
 import org.springframework.web.bind.annotation.ExceptionHandler;
@@ -12,6 +13,7 @@ public class GlobalExceptionHandler {
   @ExceptionHandler(HttpRequestMethodNotSupportedException.class)
   protected ResponseEntity<ErrorResponse> handle(HttpRequestMethodNotSupportedException e) {
     return ResponseEntity.badRequest()
+        .contentType(MediaType.APPLICATION_JSON)
         .body(ErrorResponse.of(ErrorCode.METHOD_NOT_ALLOWED.getMessage()));
   }
 
@@ -19,6 +21,7 @@ public class GlobalExceptionHandler {
   protected ResponseEntity<ErrorResponse> handle(BaseException e) {
     final ErrorCode errorCode = e.getErrorCode();
     return ResponseEntity.status(errorCode.getStatus())
+        .contentType(MediaType.APPLICATION_JSON)
         .body(ErrorResponse.of(errorCode.getMessage()));
   }
 
@@ -27,14 +30,18 @@ public class GlobalExceptionHandler {
     final ErrorCode errorCode = e.getErrorCode();
     if (e.getMessage() == null) {
       return ResponseEntity.status(errorCode.getStatus())
+          .contentType(MediaType.APPLICATION_JSON)
           .body(ErrorResponse.of(errorCode.getMessage()));
     }
-    return ResponseEntity.status(errorCode.getStatus()).body(ErrorResponse.of(e.getMessage()));
+    return ResponseEntity.status(errorCode.getStatus())
+        .contentType(MediaType.APPLICATION_JSON)
+        .body(ErrorResponse.of(e.getMessage()));
   }
 
   @ExceptionHandler(Exception.class)
   protected ResponseEntity<ErrorResponse> handle(Exception e) {
     return ResponseEntity.internalServerError()
+        .contentType(MediaType.APPLICATION_JSON)
         .body(ErrorResponse.of(ErrorCode.INTERNAL_SERVER_ERROR.getMessage()));
   }
 }