diff --git a/ansible/roles/tsg_sn/files/cmm_api_tst b/ansible/roles/tsg_sn/files/cmm_api_tst
new file mode 100644
index 00000000..a228f128
Binary files /dev/null and b/ansible/roles/tsg_sn/files/cmm_api_tst differ
diff --git a/ansible/roles/tsg_sn/files/tsg7400_obtain_sn_from_mxn.sh b/ansible/roles/tsg_sn/files/tsg7400_obtain_sn_from_mxn.sh
new file mode 100644
index 00000000..09bed603
--- /dev/null
+++ b/ansible/roles/tsg_sn/files/tsg7400_obtain_sn_from_mxn.sh
@@ -0,0 +1,22 @@
+#!/bin/bash
+
+if [ ! -f "/opt/tsg/tsg-os-provision/cmm_api_tst" ];then
+    echo "not found cmm_api_tst!"
+    exit 1
+fi
+
+/opt/tsg/tsg-os-provision/cmm_api_tst 9 1 1 127.0.0.1  | tee chid.id
+if [ $? != 0 ]; then
+    echo "cmm_api_tst failed!"
+    exit 1
+fi
+
+CHID=`cat chid.id | sed -n '1p' | awk -F ":" '{print $2}' | sed 's/ //g'`
+CHIDL=`echo $CHID | awk '{print length($0)}'`
+
+if [ $CHIDL != 20 ];then
+    echo "CHID length is not 20!"
+    exit 1
+fi
+
+echo "{\"sn\": \"$CHID\"}" > /opt/tsg/etc/tsg_sn.json
diff --git a/ansible/roles/tsg_sn/tasks/main.yml b/ansible/roles/tsg_sn/tasks/main.yml
index 708daad1..f39d909f 100644
--- a/ansible/roles/tsg_sn/tasks/main.yml
+++ b/ansible/roles/tsg_sn/tasks/main.yml
@@ -3,4 +3,15 @@
   template:
     src: "{{ role_path }}/templates/tsg_sn.json.j2.j2"
     dest: /opt/tsg/tsg-os-provision/templates/tsg_sn.json.j2
-  tags: template
\ No newline at end of file
+  tags: template
+  when: PROFILE_ID == '9000-NPB-P01R01'
+
+- name: "Template the tsg_sn.json.j2.j2"
+  copy:
+    src: "{{ item }}"
+    dest: /opt/tsg/tsg-os-provision/
+    mode: 0755
+  with_items:
+    - "{{ role_path }}/files/tsg7400_obtain_sn_from_mxn.sh"
+    - "{{ role_path }}/files/cmm_api_tst"
+  when: PROFILE_ID == '7400-MCN0-P01R01' or PROFILE_ID == '7400-MCN123-P01R01'
\ No newline at end of file
diff --git a/ansible/tsg_7400_deploy.yml b/ansible/tsg_7400_deploy.yml
index 329aa26c..3eeef6a9 100644
--- a/ansible/tsg_7400_deploy.yml
+++ b/ansible/tsg_7400_deploy.yml
@@ -7,6 +7,7 @@
     - {role: tsg-os-provision, tags: tsg-os-provision}
     - {role: system-init, tags: system-init}
     - {role: system-init-7400-mcn0, tags: system-init-7400-mcn0}
+    - {role: tsg_sn, tags: tsg_sn}
     - {role: tsg-diagnose, tags: tsg-diagnose}
 
 - hosts: 7400-MCN123-P01R01
@@ -17,4 +18,5 @@
   roles:
     - {role: tsg-os-provision, tags: tsg-os-provision}
     - {role: system-init, tags: system-init}
-    - {role: system-init-7400-mcn123, tags: system-init-7400-mcn123}
\ No newline at end of file
+    - {role: system-init-7400-mcn123, tags: system-init-7400-mcn123}
+    - {role: tsg_sn, tags: tsg_sn}
\ No newline at end of file