additional performance attribute
Type
term
Definition
Performance attribute of a system not important enough to be considered a Key Performance Parameter (KPP) or Key System Attribute (KSA), but still appropriate to include in the Capability Development Document (CDD) or updated CDD. APAs are expressed using a threshold/objective format, using parameters which reflect Measures of Performance (MOPs). APAs must be measurable, testable, and support efficient Test and Evaluation (T&E).
Source