Real Value-Added (RVA) — refers to activities that are essential to the process in order to meet the customers' expectations.
Business Value-Added (BVA) [Necessary Non-Value Added] — refers to activities essential to conducting business, such as policy and regulation compliance, that add cost to the process but do not add value from the customer's perspective.
Non Value-Added (NVA) — refers to activities that neither add value to the process from the customer's perspective nor are required to conduct business, such as storage, movement, rework, or approvals.