The User Profile Service Web Service Protocol enables a protocol client to retrieve and manage properties that pertain to a specific person or entity within a portal site, and also data in common among users. This protocol also enables a protocol client to manage links, group memberships, and users who have a social networking relationship with another user.
Sections 1.8, 2, and 3 of this specification are normative and can contain the terms MAY, SHOULD, MUST, MUST NOT, and SHOULD NOT as defined in [RFC2119]. Sections 1.5 and 1.9 are also normative but does not contain those terms. All other sections and examples in this specification are informative.