The FI must implement multi-factor authentication for all administrative accounts on any operating system, database, application, security appliance or network device that is a critical system, and for all accounts on any system it uses to access customer information through the internet. The FAQ confirms MFA is expected for critical-system administrative accounts even when access is limited to the internal network.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.