diff --git a/src/test/cord-api/Tests/targets/xoslibrary.xtarget b/src/test/cord-api/Tests/targets/xoslibrary.xtarget
index dceaa49..5e40468 100644
--- a/src/test/cord-api/Tests/targets/xoslibrary.xtarget
+++ b/src/test/cord-api/Tests/targets/xoslibrary.xtarget
@@ -164,6 +164,10 @@
     ${json_{{ m.name | lower}}_1}=    Set Json Value    ${json_{{ m.name | lower }}_1}    /ip    "2.2.2.2"
     ${json_{{ m.name | lower}}_amend_1}=    Set Json Value    ${json_{{ m.name | lower }}_amend_1}    /ip    "3.3.3.3"
     {% endif %}
+    {% if  m.name  == "ONUDevice" -%}
+    ${json_{{ m.name | lower}}_1}=    Set Json Value    ${json_{{ m.name | lower }}_1}    /serial_number    "testserialnumber"
+    ${json_{{ m.name | lower}}_amend_1}=    Set Json Value    ${json_{{ m.name | lower }}_amend_1}    /serial_number    "amendserialnumber"
+    {% endif %}
     ${json_{{ m.name | lower }}_1}=     To JSON    ${json_{{ m.name | lower }}_1}
     ${json_{{ m.name | lower }}_amend_1}=     To JSON    ${json_{{ m.name | lower }}_amend_1}
     Set Suite Variable    ${json_{{ m.name | lower }}_1}
diff --git a/src/test/cord-api/Tests/targets/xosstaticlibrary.xtarget b/src/test/cord-api/Tests/targets/xosstaticlibrary.xtarget
index 6c28b55..436c5e7 100644
--- a/src/test/cord-api/Tests/targets/xosstaticlibrary.xtarget
+++ b/src/test/cord-api/Tests/targets/xosstaticlibrary.xtarget
@@ -166,6 +166,10 @@
     ${json_{{ m.name | lower}}_1}=    Set Json Value    ${json_{{ m.name | lower }}_1}    /ip    "2.2.2.2"
     ${json_{{ m.name | lower}}_amend_1}=    Set Json Value    ${json_{{ m.name | lower }}_amend_1}    /ip    "3.3.3.3"
     {% endif %}
+    {% if  m.name  == "ONUDevice" -%}
+    ${json_{{ m.name | lower}}_1}=    Set Json Value    ${json_{{ m.name | lower }}_1}    /serial_number    "testserialnumber"
+    ${json_{{ m.name | lower}}_amend_1}=    Set Json Value    ${json_{{ m.name | lower }}_amend_1}    /serial_number    "amendserialnumber"
+    {% endif %}
     ${json_{{ m.name | lower }}_1}=     To JSON    ${json_{{ m.name | lower }}_1}
     ${json_{{ m.name | lower }}_amend_1}=     To JSON    ${json_{{ m.name | lower }}_amend_1}
     Set Suite Variable    ${json_{{ m.name | lower }}_1}