diff --git a/src/main/java/com/eactive/eai/rms/onl/manage/rule/layoutsync/KJBInterfaceService.java b/src/main/java/com/eactive/eai/rms/onl/manage/rule/layoutsync/KJBInterfaceService.java
index effd872..d3b81a7 100644
--- a/src/main/java/com/eactive/eai/rms/onl/manage/rule/layoutsync/KJBInterfaceService.java
+++ b/src/main/java/com/eactive/eai/rms/onl/manage/rule/layoutsync/KJBInterfaceService.java
@@ -25,10 +25,16 @@ class KJBInterfaceService {
 		HashMap detail = dao.selectDetailAPI(param);
 		if (detail == null) {
 			dao.insertToHE01(param);
-			
+
 			dao.deleteToHE02(param);
 			dao.insertToHE02(param);
 		}
 	}
 
+	public boolean existsInterface(String interfaceId) throws Exception {
+		HashMap<String, Object> param = new HashMap<>();
+		param.put("EAISVCNAME", interfaceId);
+		return dao.selectDetailAPI(param) != null;
+	}
+
 }
diff --git a/src/main/java/com/eactive/eai/rms/onl/manage/rule/layoutsync/LayoutSyncController.java b/src/main/java/com/eactive/eai/rms/onl/manage/rule/layoutsync/LayoutSyncController.java
index 5549159..e8f2f93 100644
--- a/src/main/java/com/eactive/eai/rms/onl/manage/rule/layoutsync/LayoutSyncController.java
+++ b/src/main/java/com/eactive/eai/rms/onl/manage/rule/layoutsync/LayoutSyncController.java
@@ -1231,10 +1231,11 @@ public class LayoutSyncController extends OnlBaseAnnotationController implements
 		param.put("command", command);
 		param.put("recvAmndHMS", recvTime);
 		
+		boolean isDevMake = this.isDevMake(interfaceId);
 		
 		if (command.equals("insert")) {
 			insertInterfaceDjb(interfaceId, body);
-			if (this.isDevMake(interfaceId)) {
+			if (isDevMake) {
 				interfaceId = interfaceId.substring(0,8) + "D" + interfaceId.substring(8);
 				insertInterfaceDjb(interfaceId, body);
 			}
@@ -1247,7 +1248,7 @@ public class LayoutSyncController extends OnlBaseAnnotationController implements
 				JSONObject layout = (JSONObject) layoutArray.get(i);
 				syncLayout(param, body, command, layout);
 				
-				if (this.isDevMake(layout)) {
+				if (isDevMake) {
 					String layoutName = (String) layout.get("id");
 					layoutName = layoutName.substring(0,12) + "D" + layoutName.substring(12);
 					layout.put("id", layoutName);
@@ -1258,7 +1259,7 @@ public class LayoutSyncController extends OnlBaseAnnotationController implements
 			JSONObject layout =  (JSONObject) layoutObject;
 			syncLayout(param, body, command, layout);
 
-			if (this.isDevMake(layout)) {
+			if (isDevMake) {
 				String layoutName = (String) layout.get("id");
 				layoutName = layoutName.substring(0,12) + "D" + layoutName.substring(12);
 				layout.put("id", layoutName);
@@ -1267,13 +1268,22 @@ public class LayoutSyncController extends OnlBaseAnnotationController implements
 		}
     }
     
-    private boolean isDevMake(String interfaceId) {
-    	//interfaceId 9번째 글자가 D가 아니면 interfaceId의 8번째 자리에 D를 추가하여 insert한다
-    	return !"D".equals(interfaceId.substring(7,8));
+    private boolean isDevMake(String interfaceId) throws Exception {
+    	//interfaceId 9번째 글자가 D이면 false
+    	if ("D".equals(interfaceId.substring(7,8))) {
+    		return false;
+    	}
+    	//신규 등록 true
+    	if (!interfaceService.existsInterface(interfaceId)) {
+    		return true;
+    	}
+    	//interface는 있는데 Dev가 없으면 (필요없어서 삭제한경우) false
+    	String devInterfaceId = interfaceId.substring(0,8) + "D" + interfaceId.substring(8);
+    	return interfaceService.existsInterface(devInterfaceId);
     }
-    
-    private boolean isDevMake(JSONObject layout) {
-    	String loutName = (String) layout.get("id"); 
+
+    private boolean isDevMake(JSONObject layout) throws Exception {
+    	String loutName = (String) layout.get("id");
 		String[] parts = loutName.split("_");
 		String interfaceId = parts[1];
 		return isDevMake(interfaceId);