Namespace: http://schemas.microsoft.com/exchange/services/2006/types

The ArrayOfValueAttributionsType complex type specifies an array of strings, where each string matches one of the identifier values of the attributions of a persona.

 <xs:complexType name="ArrayOfValueAttributionsType" xmlns:xs="http://www.w3.org/2001/XMLSchema">
     <xs:element minOccurs="1" maxOccurs="unbounded" name="Attribution" type="xs:string"/>

Attribution: An element of type string, as defined in [XMLSCHEMA2], that identifies an attribution for a persona.