Source: http://msdn.microsoft.com/en-us/library/hh272123.aspx Source: http://msdn.microsoft.com/EN-US/library/hh272121.aspx Overview of Security Policies for Table Records [AX 2012] Security policies enable developers and administrators to block access to subsets of data rows in tables. A policy is roughly similar to a where clause in an SQL select statement. A security permission increases the access a user has to data, but a security policy decreases access to data. In the Application Object Tree (AOT), policies are displayed under Security > Policies . Security policies are enforced in the Application Object Server (AOS). All access mechanisms that route through the AOS are subject to policy enforcement. These access mechanisms include forms, Enterprise Portal webpages, SSRS reports, and calls from class methods. An Extensible Data Security Model Microsoft Dynamics AX uses an extensible data security (XDS) model. XDS extends data security from a s...