& in XML Node Getting Error

[EXTERNAL Taminidi Ravi (ETI, Automotive-Service-Solutions)]

Hi, I am getting Error if any of the field in the xml file has & as value.

How can I fix this issue

FYI I changed & to & in the field but still has issues

e.g <filed name="Name">AT&T</field> or <field name="Name">AT&amp;T</field>

Above both gives error, DO I need to change something in the configuration. 

Thanks

Ravi