SysML v1/UAF/UML Model Element Descriptions UAF 1.3 elements Current: Resource Exchange Item Resource Exchange Item DescriptionAn abstract grouping for elements that defines the types of elements that can be exchanged between Resource Performers and conveyed by a Resource Exchange.Architecture FrameworkUAF 1.3, DoDAF 2.0, MODAF, NAF, NAF 4.0 ×