Assign ownership via API with email address

Assign ownership via API with email address

I currently use a PHP script to assign assets to users from within one of our other business applications. I use this part pf the XML to assign the asset to a user.  However, I have some employees that have the same name.  Is there a way to assign an asset to a user by email address via the API (because employees with the same name have different email addresses)?

  1. <multi-valued-parameter name="Assign Ownership">
                <record>
                    <parameter><name>User</name><value>$user_name</value></parameter>
                </record>
            </multi-valued-parameter>


Thank You