diff --git a/ovsdb/rfc/src/main/java/org/onosproject/ovsdb/rfc/error/UnsupportedException.java b/ovsdb/rfc/src/main/java/org/onosproject/ovsdb/rfc/error/UnsupportedException.java
new file mode 100644
index 0000000..a34b8d4
--- /dev/null
+++ b/ovsdb/rfc/src/main/java/org/onosproject/ovsdb/rfc/error/UnsupportedException.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.ovsdb.rfc.error;
+
+/**
+ * This exception is thrown when the caller invoke the unsupported method or
+ * use the encoding is not supported.
+ */
+public class UnsupportedException extends RuntimeException {
+    private static final long serialVersionUID = 1377011546616825375L;
+
+    /**
+     * Constructs a UnsupportedException object.
+     * @param message error message
+     */
+    public UnsupportedException(String message) {
+        super(message);
+    }
+
+    /**
+     * Constructs a UnsupportedException object.
+     * @param message error message
+     * @param cause Throwable
+     */
+    public UnsupportedException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}