Which is NOT a responsibility of a QIR?

A Qualified Integrator and Reseller (QIR) has specific responsibilities related to the installation and maintenance of payment systems in compliance with PCI DSS standards. Their primary role includes ensuring that the systems they implement are secure, comply with PCI requirements, and utilize approved devices.

Maintaining ongoing merchant compliance is typically the responsibility of the merchant themselves rather than the QIR. While the QIR can provide guidance and support during the implementation phase, it is ultimately the merchant's duty to uphold compliance with PCI standards continuously. This involves regular assessments, updates, and adherence to security policies that go beyond the initial setup.

In contrast, the other responsibilities, such as installing merchant payment systems, addressing critical security controls, and ensuring that only PCI-approved devices are utilized, fall squarely within the QIR's domain. These activities are crucial for enabling merchants to handle cardholder data securely and effectively, thus reinforcing the importance of the QIR's role in maintaining a secure payment environment.