diff --git a/common/core/src/main/java/kr/co/palnet/kac/core/code/Level.java b/common/core/src/main/java/kr/co/palnet/kac/core/code/Level.java
new file mode 100644
index 0000000..2a70b31
--- /dev/null
+++ b/common/core/src/main/java/kr/co/palnet/kac/core/code/Level.java
@@ -0,0 +1,24 @@
+package kr.co.palnet.kac.core.code;
+
+public enum Level {
+	INFO(0), 
+	WARN(1),
+	RETRY(2),
+	DROP(3),
+	RECYCLE(4),
+	CRITICAL(5);
+	
+	private int code;
+
+	Level(int code) {
+		setLevel(code);
+	}
+
+	public int getLevel() {
+		return code;
+	}
+
+	public void setLevel(int code) {
+		this.code = code;
+	}
+}
diff --git a/common/core/src/main/java/kr/co/palnet/kac/core/code/MessageType.java b/common/core/src/main/java/kr/co/palnet/kac/core/code/MessageType.java
new file mode 100644
index 0000000..22e2fa3
--- /dev/null
+++ b/common/core/src/main/java/kr/co/palnet/kac/core/code/MessageType.java
@@ -0,0 +1,8 @@
+package kr.co.palnet.kac.core.code;
+
+public enum MessageType {
+	OPENSKY,
+	ADSB,
+	LTEM,
+	ETC,
+}
diff --git a/common/core/src/main/java/kr/co/palnet/kac/core/code/ObjectType.java b/common/core/src/main/java/kr/co/palnet/kac/core/code/ObjectType.java
new file mode 100644
index 0000000..6143d13
--- /dev/null
+++ b/common/core/src/main/java/kr/co/palnet/kac/core/code/ObjectType.java
@@ -0,0 +1,9 @@
+package kr.co.palnet.kac.core.code;
+
+public enum ObjectType {
+	DRON,
+	AIRPLANE,
+	CAR,
+	BUS,
+	PERSON
+}
diff --git a/common/core/src/main/java/kr/co/palnet/kac/core/code/RSErrorCode.java b/common/core/src/main/java/kr/co/palnet/kac/core/code/RSErrorCode.java
new file mode 100644
index 0000000..b31e5af
--- /dev/null
+++ b/common/core/src/main/java/kr/co/palnet/kac/core/code/RSErrorCode.java
@@ -0,0 +1,32 @@
+package kr.co.palnet.kac.core.code;
+
+public enum RSErrorCode {
+	SUCCESS("1", "Success"),
+	FAIL("-1" , "Fail"),
+	ER_PARAM("-100" , "Please parameter Check"),
+	DATA_NOTFOUNT("-101" , "Data not found"),
+	PSWD_NOTMATCH("-102" , "Password does not match"),
+	ACNT_UNAVAIL("-103","Account is unavailable"),
+	
+	AUTH_ERROR("-401", "auth error"),
+	INTERNAL_SERVER_ERROR("-500", "Internal system error"),
+	DATA_DUPLICATE("-104","Duplicate data exists");
+	
+
+	private final String code;
+
+	private final String message;
+	
+	private RSErrorCode(String code, String message) {
+		this.code = code;
+		this.message = message;
+	}
+
+	public String code() {
+		return code;
+	}
+
+	public String message() {
+		return message;
+	}
+}
diff --git a/common/core/src/main/java/kr/co/palnet/kac/core/code/Source.java b/common/core/src/main/java/kr/co/palnet/kac/core/code/Source.java
new file mode 100644
index 0000000..3424ee7
--- /dev/null
+++ b/common/core/src/main/java/kr/co/palnet/kac/core/code/Source.java
@@ -0,0 +1,6 @@
+package kr.co.palnet.kac.core.code;
+
+public enum Source {
+	SERVER,
+	INTERNAL
+}