Please vote for WS-Policy if this is relevant to your enterprise web services

http://www-128.ibm.com/developerworks/library/specification/ws-polfram/

The Web Services Policy Framework (WS-Policy) provides a general purpose model and corresponding syntax to describe and communicate the policies of a Web service. WS-Policy defines a base set of constructs that can be used and extended by other Web services specifications to describe a broad range of service requirements, preferences, and capabilities.