Upgrading UDAs, Extensions, and Field Attributes to Attributes Rev B is a 30-minute eLearning course on upgrading objects with User Defined Attributes and extensions, as well as upgrading User Defined Objects with Field Attributes to Application Server 2014 R2 Patch 1 or later. The course discusses and provides a demonstration of the way attributes are defined in Application Server and describes the Attributes tab as it relates to the User Defined Attributes and Field Attributes in Legacy versions.