diff --git a/utils/yangutils/datamodel/src/main/java/org/onosproject/yangutils/datamodel/YangStringRestriction.java b/utils/yangutils/datamodel/src/main/java/org/onosproject/yangutils/datamodel/YangStringRestriction.java
index ce626ed..b52a70e 100644
--- a/utils/yangutils/datamodel/src/main/java/org/onosproject/yangutils/datamodel/YangStringRestriction.java
+++ b/utils/yangutils/datamodel/src/main/java/org/onosproject/yangutils/datamodel/YangStringRestriction.java
@@ -33,7 +33,7 @@
 /**
  * Represents the restriction for string data type.
  */
-public class YangStringRestriction implements YangDesc, YangReference, YangAppErrorInfo, Parsable, Serializable {
+public class YangStringRestriction implements YangDesc, YangReference, Parsable, Serializable {
 
     /*-
      * Reference RFC 6020.
@@ -89,16 +89,6 @@
     private String reference;
 
     /**
-     * Application's error message, to be used for data error.
-     */
-    private String errorMessage;
-
-    /**
-     * Application's error tag, to be filled in data validation error response.
-     */
-    private String errorAppTag;
-
-    /**
      * Textual description.
      */
     private String description;
@@ -198,47 +188,6 @@
 
     }
 
-    /**
-     * Returns application's error message, to be used for data error.
-     *
-     * @return Application's error message, to be used for data error
-     */
-    @Override
-    public String getGetErrorMessage() {
-        return errorMessage;
-    }
-
-    /**
-     * Sets Application's error message, to be used for data error.
-     *
-     * @param errMsg Application's error message, to be used for data error
-     */
-    @Override
-    public void setErrorMessage(String errMsg) {
-        errorMessage = errMsg;
-
-    }
-
-    /**
-     * Returns application's error tag, to be used for data error.
-     *
-     * @return application's error tag, to be used for data error
-     */
-    @Override
-    public String getGetErrorAppTag() {
-        return errorAppTag;
-    }
-
-    /**
-     * Sets application's error tag, to be used for data error.
-     *
-     * @param errTag application's error tag, to be used for data error.
-     */
-    @Override
-    public void setErrorAppTag(String errTag) {
-        errorAppTag = errTag;
-    }
-
     @Override
     public YangConstructType getYangConstructType() {
         return YangConstructType.PATTERN_DATA;