diff --git a/router/api/telemetry/telemetry.js b/router/api/telemetry/telemetry.js
index 4b1a5b6..70b0c67 100644
--- a/router/api/telemetry/telemetry.js
+++ b/router/api/telemetry/telemetry.js
@@ -1,6 +1,8 @@
 const _ = require('lodash')
 var LOG = require('../../log/logger')
 const Telemetry = require('sb_telemetry_util')
+const TelemetryLogger = require('sb_logger_util')
+var UUID = require('uuid')
 const telemetry = new Telemetry()
 module.exports = {
   ver  : '',
@@ -89,5 +91,33 @@ module.exports = {
     } catch(e) {
       LOG.error('Error while initilising telemetry')
     }
+  },
+
+  /**
+ * for log event
+ * data object have these properties {'edata', context', 'object', 'tags'}
+ */
+telemetryLog : function (data, edata) {
+  try {
+    var channelId = data.channelId
+    var appId = data.appId
+    var env = data.env
+    var rollup = telemetry.getRollUpData([])
+    var did = data.deviceId
+    var mid = 'LOG:' + UUID();
+    let logData = {
+      eid: "LOG",
+      ets: new Date().getTime(),
+      ver: "3.0",
+      mid: mid,
+      actor: telemetry.getActorData(data.userId, 'user'),
+      context: telemetry.getContextData({ channel: channelId, env: env, pdata: {id: 'org.sunbird.chatbot.router'},cdata: [], rollup: rollup, did: did }),
+      object: {},
+      edata: edata
+    };
+    TelemetryLogger.info(logData);
+  } catch (e) {
+    LOG.error('Error while logger info event')
   }
+}
 } 
\ No newline at end of file
diff --git a/router/appRest.js b/router/appRest.js
index 3b6f144..6a3bc31 100644
--- a/router/appRest.js
+++ b/router/appRest.js
@@ -45,7 +45,8 @@ appBot.post('/bot', function (req, res) {
 			env: req.body.appId + '.bot',
 			sessionId: '',
 			channelId: req.body.channel,
-			uaspec: getUserSpec(req)
+			uaspec: getUserSpec(req),
+			requestid: req.headers["x-request-id"] ? req.headers["x-request-id"] :"",
 		}
 	}
 	handler(req, res, data)
@@ -66,12 +67,23 @@ appBot.post('/whatsapp', function (req, res) {
 				env: config.TELEMETRY_DATA_ENV_WHATSAPP,
 				channelId: config.TELEMETRY_DATA_CHANNELID_WHATSAPP,
 				sessionId: '',
-				uaspec: getUserSpec(req)
+				uaspec: getUserSpec(req),
+				requestid: req.headers["x-request-id"] ? req.headers["x-request-id"] :"",
 			}
 		}
 		handler(req, res, data)
 	} else {
-		sendErrorResponse(res)
+		var customData= {
+			userId: crypto.createHash('sha256').update(req.body.incoming_message[0].from).digest("hex"),
+			deviceId: crypto.createHash('sha256').update(req.body.incoming_message[0].from).digest("hex"),
+			appId: config.TELEMETRY_DATA_PID_WHATSAPP,
+			env: config.TELEMETRY_DATA_ENV_WHATSAPP,
+			channelId: config.TELEMETRY_DATA_CHANNELID_WHATSAPP,
+			sessionId: '',
+			uaspec: getUserSpec(req),
+			requestid: req.headers["x-request-id"] ? req.headers["x-request-id"] :"",
+		}
+		sendErrorResponse(res, customData)
 	}
 
 })
@@ -83,6 +95,13 @@ function handler(req, res, data) {
 	redisSessionData = {};
 
 	if (!data.customData.deviceId) {
+		var edata = {
+			type: "system",
+			level: "INFO",
+			requestid: data.customData.requestid,
+			message: "Attribute missing from request body"
+		  }
+		telemetry.telemetryLog(data.customData, edata);
 		sendResponse(data.customData.deviceId, res, "From attribute missing", 400);
 	} else {
 		redisClient.get(REDIS_KEY_PREFIX + data.customData.deviceId, (err, redisValue) => {
@@ -133,7 +152,15 @@ function handler(req, res, data) {
 function freeFlowLogic(data, res, chatflowConfig) {
 	RasaCoreController.processUserData(data, (err, resp) => {
 		var response = '';
+		var edata = {
+			type: "system",
+			level: "INFO",
+			requestid: data.customData.requestid,
+			message: ""
+		  }
 		if (err) {
+			edata.message = "Sorry: Core RASA controller failed to load";
+			telemetry.telemetryLog(data.customData, edata);
 			sendChannelResponse(data.customData.deviceId, res, data, 'SORRY')
 		} else {
 			var responses = resp.res;
@@ -156,8 +183,12 @@ function freeFlowLogic(data, res, chatflowConfig) {
 			}
 			telemetry.logInteraction(telemetryData);
 			if (data.channel == config.WHATSAPP) {
+				edata.message = "Free flow whats app response";
+				telemetry.telemetryLog(data.customData, edata);
 				sendResponseWhatsapp(res, response, data.recipient, "freeFlow")
 			} else {
+				edata.message = "Free flow web poartal response";
+				telemetry.telemetryLog(data.customData, edata);
 				sendResponse(res, response)
 			}
 
@@ -198,6 +229,14 @@ function menuDrivenLogic(data, res, chatflowConfig) {
 	} else {
 		responseKey = getErrorMessageForInvalidInput(currentFlowStep, chatflowConfig, true)
 		menuIntentKnown = false
+		var edata = {
+			type: "system",
+			level: "INFO",
+			requestid: data.customData.requestid,
+			message: ""
+		  }
+		edata.message = "UNKNOWN OPTION";
+		telemetry.telemetryLog(data.customData, edata);
 		// TODO : Don't call function inside each if/else if it should be called once.
 		telemetryData = createInteractionData({ currentStep: currentFlowStep + '_UNKNOWN_OPTION' }, data, false)
 	}
@@ -237,8 +276,16 @@ function consolidatedLog(data, responseKey, menuIntentKnown, isMenuDriven) {
 			intent = config.FREEFLOW_INTENT_NOT_DETECTED
 		}
 	}
-
-	LOG.info("UserId: " + data.customData.userId + "," + " DeviceId: " + data.customData.deviceId + "," + " UserQuery: " + data.message + "," + " Bot_Response_identifier: " + intent + "," + " BotResponse: " + responseKey)
+	var message = "UserId: " + data.customData.userId + "," + " DeviceId: " + data.customData.deviceId + "," + " UserQuery: " + data.message + "," + " Bot_Response_identifier: " + intent + "," + " BotResponse: " + responseKey;
+
+	var edata = {
+		type: "system",
+		level: "INFO",
+		requestid: data.customData.requestid,
+		message: message
+	  }
+	telemetry.telemetryLog(data.customData, edata)
+	LOG.info(message)
 }
 
 function setRedisKeyValue(key, value) {
@@ -300,7 +347,14 @@ function sendResponse(response, responseBody, responseCode) {
 	response.send(responseBody)
 }
 
-function sendErrorResponse(response){
+function sendErrorResponse(response, data){
+	var edata = {
+		type: "system",
+		level: "INFO",
+		requestid: data.customData.requestid,
+		message: "401 invalid request"
+	  }
+	telemetry.telemetryLog(data, edata)
 	response.status(401);
 	response.send('invalid request');
 }
@@ -342,7 +396,16 @@ function sendResponseWhatsapp(response,responseBody, recipient, textContent) {
 }
 function sendChannelResponse(response, responseKey, data, responseCode) {
 	response.set('Content-Type', 'application/json')
-	if (responseCode) response.status(responseCode)
+	if (responseCode){
+		response.status(responseCode)
+		var edata = {
+			type: "system",
+			level: "INFO",
+			requestid: data.customData.requestid,
+			message: "404 not found"
+		  }
+		telemetry.telemetryLog(data.customData, edata)
+	}
 
 	//version check
 	var channelResponse = literals.message[responseKey + '_' + data.channel];
diff --git a/router/libs/sb_logger_util/index.js b/router/libs/sb_logger_util/index.js
new file mode 100644
index 0000000..546d7b1
--- /dev/null
+++ b/router/libs/sb_logger_util/index.js
@@ -0,0 +1,74 @@
+/*
+ * @file: index.js
+ * @author: Jagadish P
+ * @desc: using log4s, enables application wide logging.
+ */
+var log4js = require('log4js')
+var fs = require('fs')
+var dir = '../../log'
+var configUtil = require('../sb-config-util')
+
+if (!fs.existsSync(dir)) {
+  fs.mkdirSync(dir)
+}
+
+var options = {
+  'appenders': [{
+    'type': 'clustered',
+    'appenders': [
+      {
+        'type': 'console'
+      }, {
+        'type': 'logLevelFilter',
+        'level': 'TRACE',
+        'category': 'api',
+        'appender': {
+          'type': 'file',
+          'maxLogSize': 26214400,
+          'filename': '../../log/microService.log'
+        }
+      }
+    ]
+  }]
+}
+
+log4js.configure(options)
+var logger = log4js.getLogger('api')
+
+var isLoggerEnabled = function () {
+  var loggerEnabled = configUtil.getConfig('ENABLE_LOGGING')
+  return (loggerEnabled !== undefined && loggerEnabled === 'true')
+}
+
+var info = function (data) {
+  if (data) {
+    logger.setLevel('INFO')
+    logger.info(JSON.stringify(data))
+  }
+}
+
+var error = function (data) {
+  if (data && isLoggerEnabled()) {
+    logger.setLevel('ERROR')
+    logger.error(JSON.stringify(data))
+  }
+}
+
+var warn = function (data) {
+  if (data && isLoggerEnabled()) {
+    logger.setLevel('WARN')
+    logger.warn(JSON.stringify(data))
+  }
+}
+
+var trace = function (data) {
+  if (data && isLoggerEnabled()) {
+    logger.setLevel('TRACE')
+    logger.trace(JSON.stringify(data))
+  }
+}
+
+module.exports.info = info
+module.exports.error = error
+module.exports.warn = warn
+module.exports.trace = trace
\ No newline at end of file
diff --git a/router/libs/sb_logger_util/package.json b/router/libs/sb_logger_util/package.json
new file mode 100644
index 0000000..34cdd6d
--- /dev/null
+++ b/router/libs/sb_logger_util/package.json
@@ -0,0 +1,14 @@
+{
+    "name": "sb_logger_util",
+    "version": "1.0.0",
+    "description": "this package serves as log",
+    "main": "index.js",
+    "scripts": {
+        "test": "echo \"Error: no test specified\" && exit 1"
+    },
+    "author": "Jagadish",
+    "license": "ISC",
+    "dependencies": {
+        "log4js": "^0.6.29"
+    }
+}
\ No newline at end of file
diff --git a/router/package.json b/router/package.json
index 6319ab7..aa73a92 100644
--- a/router/package.json
+++ b/router/package.json
@@ -20,6 +20,7 @@
     "ua-parser-js": "^0.7.13",
     "sb_telemetry_util": "file:libs/sb_telemetry_util",
     "sb_config_util": "file:libs/sb-config-util",
+    "sb_logger_util": "file:libs/sb_logger_util",
     "redis": "^3.0.2",
     "request": "^2.88.0",
     "socket.io": "^2.3.0",