A subpractice is a detailed description that provides guidance for interpreting and implementing a specific or generic practice. Subpractices may be worded as if prescriptive, but are actually an informative component meant only to provide ideas that may be useful for process improvement.

For example, a subpractice for the specific practice “Take corrective action on identified issues” in the Project Monitoring and Control process area is “Determine and document the appropriate actions needed to address the identified issues.”