diff --git a/src/test/cord-api/Framework/ONU.robot b/src/test/cord-api/Framework/ONU.robot
index e5b7a2e..1b9c278 100644
--- a/src/test/cord-api/Framework/ONU.robot
+++ b/src/test/cord-api/Framework/ONU.robot
@@ -28,8 +28,19 @@
     ${api_result}=    restApi.ApiPost    ONU_DEVICE    ${onu_dictionary}
     Should Be True    ${api_result}
 
+Retrieve ONU Device
+    [Arguments]    ${serial_number}
+    [Documentation]    Returns the onu device id based on the onu's serial number
+    ${json_result}=    restApi.ApiGet    ONU_DEVICE
+    Log    ${json_result}
+    Log To Console    ${json_result}
+    ${json_result_list}=    Get From dictionary    ${json_result}    items
+    ${getJsonDict}=    utils.getDictFromListOfDict    ${json_result_list}    serial_number    ${serial_number}
+    ${id}=    Get From Dictionary    ${getJsonDict}   id
+    [Return]    ${id}
+
 Delete ONU Device
     [Arguments]    ${id}
     [Documentation]    Sends a DELETE to delete an onu device in XOS
     ${api_result}=    restApi.ApiChameleonDelete    ONU_DEVICE    ${id}
-    Should Be True    ${api_result}
\ No newline at end of file
+    Should Be True    ${api_result}