put https://yourServer.jamfcloud.com/JSSResource/mobiledevices/udid/
<os_name> in is derived from the api level and cannot be set.
<mobile_device>
<general>
<display_name>iPad</display_name>
<device_name>iPad</device_name>
<name>iPad</name>
<asset_tag>string</asset_tag>
<serial_number>C02Q7KHTGFWD</serial_number>
<udid>270aae10800b6e61a2ee2bbc285eb967050b6984</udid>
</general>
<location>
<username>JBetty</username>
<realname>Betty Jackson</realname>
<real_name>Betty Jackson</real_name>
<email_address>[email protected]</email_address>
<position>Systems Engineer</position>
<phone>123-555-6789</phone>
<phone_number>123-555-6789</phone_number>
<department>Sales Staff</department>
<building>New York Office</building>
<room>1159</room>
</location>
<purchasing>
<is_purchased>true</is_purchased>
<is_leased>true</is_leased>
<po_number>string</po_number>
<vendor>string</vendor>
<applecare_id>string</applecare_id>
<purchase_price>string</purchase_price>
<purchasing_account>string</purchasing_account>
<po_date_epoch>0</po_date_epoch>
<warranty_expires_epoch>0</warranty_expires_epoch>
<lease_expires_epoch>0</lease_expires_epoch>
<life_expectancy>0</life_expectancy>
<purchasing_contact>string</purchasing_contact>
</purchasing>
<extension_attributes>
<extension_attribute>
<id>1</id>
<name>Asset Selector</name>
<value>Sample Value</value>
</extension_attribute>
</extension_attributes>
</mobile_device>