diff --git a/TAF/config/global_variables.py b/TAF/config/global_variables.py
index a862cca8..c8a886a5 100644
--- a/TAF/config/global_variables.py
+++ b/TAF/config/global_variables.py
@@ -29,6 +29,7 @@
 APP_HTTP_EXPORT_PORT = 59704
 APP_MQTT_EXPORT_PORT = 59703
 APP_FUNCTIOAL_TESTS_PORT = 59705
+APP_EXTERNAL_MQTT_TRIGGER_PORT = 59706
 REGISTRY_PORT = 8500
 
 if SECURITY_SERVICE_NEEDED == 'true':
diff --git a/TAF/testData/app-service/secrets_data.json b/TAF/testData/app-service/secrets_data.json
index faa1bc2d..b188043c 100644
--- a/TAF/testData/app-service/secrets_data.json
+++ b/TAF/testData/app-service/secrets_data.json
@@ -60,5 +60,15 @@
         "value": "httpuser"
       }
     ]
+  },
+  "External MQTT Trigger Auth": {
+    "apiVersion" : "v2",
+    "path" : "mqtt-trigger",
+    "secretData" : [
+      {
+        "key" : "api-key",
+        "value": "externalmqttuser"
+      }
+    ]
   }
 }
diff --git a/TAF/testScenarios/integrationTest/UC_app_service_configurable/external_mqtt_trigger.robot b/TAF/testScenarios/integrationTest/UC_app_service_configurable/external_mqtt_trigger.robot
new file mode 100644
index 00000000..02d2455a
--- /dev/null
+++ b/TAF/testScenarios/integrationTest/UC_app_service_configurable/external_mqtt_trigger.robot
@@ -0,0 +1,40 @@
+*** Settings ***
+Library          Process
+Resource         TAF/testCaseModules/keywords/common/commonKeywords.robot
+Resource         TAF/testCaseModules/keywords/app-service/AppServiceAPI.robot
+Suite Setup      Setup Suite
+Suite Teardown   Run Teardown Keywords
+Force Tags       MessageQueue=redis
+
+*** Variables ***
+${SUITE}         External MQTT Trigger
+${LOG_FILE_PATH}          ${WORK_DIR}/TAF/testArtifacts/logs/external_mqtt_trigger.log
+
+*** Test Cases ***
+ExternalTrigger001 - Test external mqtt trigger works
+    Given Set Test Variable  ${publish_msg}  Message from mqtt publisher
+    And Set Test Variable  ${mqtt_trigger_topic}  external-request
+    And Set Test Variable  ${mqtt_export_topic}  edgex-export
+    And Subscribe MQTT Broker Topics
+    When Run process  python ${WORK_DIR}/TAF/utils/src/setup/mqtt-publisher.py ${mqtt_trigger_topic} "${publish_msg}"
+         ...          shell=True
+    Then Message Is Recevied By ${mqtt_trigger_topic} Topic
+    And Message Is Recevied By ${mqtt_export_topic} Topic
+    [Teardown]  Terminate All Processes  kill=True
+
+
+*** Keywords ***
+Subscribe MQTT Broker Topics
+    ${topics}  Create List  ${mqtt_trigger_topic}  ${mqtt_export_topic}
+    FOR  ${topic}  IN  @{topics}
+        Start process  python ${WORK_DIR}/TAF/utils/src/setup/mqtt-subscriber.py ${topic} ${publish_msg} arg   # Process for MQTT Subscriber
+        ...                shell=True  stdout=${WORK_DIR}/TAF/testArtifacts/logs/${topic}.log
+    END
+
+Message Is Recevied By ${topic} Topic
+    ${subscribe_msg}  Grep File  ${WORK_DIR}/TAF/testArtifacts/logs/${topic}.log  ${publish_msg}
+    Should Not Be Empty  ${subscribe_msg}
+
+Store Secret With ${service} To Vault
+    Set Test Variable  ${url}  http://${BASE_URL}:${APP_EXTERNAL_MQTT_TRIGGER_PORT}
+    Store Secret Data With ${service} Auth
diff --git a/TAF/utils/src/setup/mqtt-publisher.py b/TAF/utils/src/setup/mqtt-publisher.py
new file mode 100644
index 00000000..0c2d31c8
--- /dev/null
+++ b/TAF/utils/src/setup/mqtt-publisher.py
@@ -0,0 +1,13 @@
+#!/usr/bin/env python3
+
+import paho.mqtt.client as mqtt
+import sys
+
+topic = sys.argv[1]
+message = sys.argv[2]
+
+
+client = mqtt.Client()
+client.connect("localhost", 1883, 60)
+client.publish(topic, message)
+client.disconnect()