Term:Obligation
NIST SP 800-95
Obligation - An operation specified in a policy or policy set that should be performed by the PEP in conjunction with the enforcement of an authorization decision. (OASIS XACML 2.0 Specification, http://docs.oasis-open.org/xacml/2.0/access_control-xacml-2.0-core-spec-os.pdf)