diff --git a/tests/dt-workflow/Voltha_DT_FailureScenarios.robot b/tests/dt-workflow/Voltha_DT_FailureScenarios.robot
index 54d15aa..c25f6ed 100755
--- a/tests/dt-workflow/Voltha_DT_FailureScenarios.robot
+++ b/tests/dt-workflow/Voltha_DT_FailureScenarios.robot
@@ -88,9 +88,9 @@
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
         ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         # If the power switch port is not specified, continue
         Continue For Loop If    '${src["power_switch_port"]}' == '${None}'
         # Disable Power Switch
@@ -258,9 +258,9 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         Wait Until Keyword Succeeds    ${timeout}    5s
         ...    Validate Device        ENABLED    ACTIVE    REACHABLE
         ...    ${onu_device_id}    onu=True    onu_reason=initial-mib-downloaded    by_dev_id=True
@@ -350,9 +350,9 @@
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
         ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         # Verify ONU state in voltha
         Run Keyword And Continue On Failure    Wait Until Keyword Succeeds    ${timeout}    5s    Validate Device
         ...    ENABLED    ACTIVE    REACHABLE
@@ -403,9 +403,9 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         # Bring up the device and verify it authenticates
         Wait Until Keyword Succeeds    360s    5s    Validate Device    ENABLED    ACTIVE    REACHABLE
         ...    ${onu_device_id}    onu=True    onu_reason=initial-mib-downloaded    by_dev_id=True
@@ -518,9 +518,9 @@
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
         ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         Reboot Device    ${onu_device_id}
         Run Keyword If    ${has_dataplane}    Run Keyword And Continue On Failure
         ...    Wait Until Keyword Succeeds    ${timeout}    2s
@@ -771,9 +771,9 @@
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
         ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         # Remove Subscriber Access
         Wait Until Keyword Succeeds    ${timeout}    2s    Execute ONOS CLI Command use single connection    ${ONOS_SSH_IP}
         ...    ${ONOS_SSH_PORT}    volt-remove-subscriber-access ${of_id} ${onu_port}