diff --git a/pcep/pcepio/src/main/java/org/onosproject/pcepio/protocol/PcepErrorMsg.java b/pcep/pcepio/src/main/java/org/onosproject/pcepio/protocol/PcepErrorMsg.java
old mode 100755
new mode 100644
index c785c2c..ff06885
--- a/pcep/pcepio/src/main/java/org/onosproject/pcepio/protocol/PcepErrorMsg.java
+++ b/pcep/pcepio/src/main/java/org/onosproject/pcepio/protocol/PcepErrorMsg.java
@@ -1,6 +1,23 @@
+/*
+ * 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.pcepio.protocol;
 
 import org.jboss.netty.buffer.ChannelBuffer;
+import org.onosproject.pcepio.exceptions.PcepParseException;
 import org.onosproject.pcepio.types.ErrorObjListWithOpen;
 
 /**
@@ -43,7 +60,7 @@
     void setPcepErrorInfo(PcepErrorInfo errInfo);
 
     @Override
-    void writeTo(ChannelBuffer channelBuffer);
+    void writeTo(ChannelBuffer channelBuffer) throws PcepParseException;
 
     /**
      * Builder interface with get and set functions to build PCEP Error message.