This document defines the concept of reliability of banking application systems, stipulates the levels and description methods of components and elements of each family of reliability classes, and the non-functions of the maturity family, availability family, fault tolerance family and recoverability family of the reliability class. Requirements template. This document is applicable to the description of reliability non-functional requirements for various application systems in the banking industry. The application system that exchanges information with the banking application system can be used as a reference as needed.