Customer

<Customer KeyField="EmailAddress" EmailAddress="[email protected]”>

The <Customer> entity has one required attribute, EmailAddress. A customer must have an e-mail address so Connect can send marketing messages.

There is a special optional field for <Customer>, KeyField. The value of this field defines the attribute used to look up a customer. There are only two acceptable values, EmailAddress (by default) or Alt Customer id (which should match the name of the XML attribute field for alt customer id).

All other customer-related data are embedded either as extra attributes of <Customer> or in <CustomerAttribute> and <CustomerPreference>.

Extra attributes of <Customer> should match the column name of your Connect customer_master table. So the first name of a customer can be in:
<Customer EmailAddress=”[email protected]” First_name=”John”></Customer>