Just look at the WSI master doc reference here:
Code:
<Customer Action="Add|Update|Delete|Nuke|Lookup" GUID="uniqueidentifier" ID="integer" EMail="string">
....
<Addresses AutoCleanup="true|false, make sure you know what you are doing if you explicitly set this flag, as recurring orders could be adversly affected!!!!">
<Address Action="Add|Update|Delete|Nuke|Lookup" GUID="uniqueidentifier" ID="integer">
<NickName>string</NickName>
<FirstName>string</FirstName>
<LastName>string</LastName>
<Company>string</Company>
<Address1>string</Address1>
<Address2>string</Address2>
<Suite>string</Suite>
<City>string</City>
<State>string</State>
<Zip>string</Zip>
<Country>string</Country>
<ResidenceType>integer</ResidenceType>
<Phone>string</Phone>
<Email>string</Email>
<ExtensionData>string</ExtensionData>
</Address>
<Address Action="Add|Update|Delete|Nuke|Lookup" GUID="uniqueidentifier" ID="integer">
<NickName>string</NickName>
<FirstName>string</FirstName>
<LastName>string</LastName>
<Company>string</Company>
<Address1>string</Address1>
<Address2>string</Address2>
<Suite>string</Suite>
<City>string</City>
<State>string</State>
<Zip>string</Zip>
<Country>string</Country>
<ResidenceType>integer</ResidenceType>
<Phone>string</Phone>
<Email>string</Email>
<ExtensionData>string</ExtensionData>
</Address>
<Address Action="Add|Update|Delete|Nuke|Lookup" GUID="uniqueidentifier" ID="integer">
<NickName>string</NickName>
<FirstName>string</FirstName>
<LastName>string</LastName>
<Company>string</Company>
<Address1>string</Address1>
<Address2>string</Address2>
<Suite>string</Suite>
<City>string</City>
<State>string</State>
<Zip>string</Zip>
<Country>string</Country>
<ResidenceType>integer</ResidenceType>
<Phone>string</Phone>
<Email>string</Email>
<ExtensionData>string</ExtensionData>
</Address>
</Addresses>
</Customer>