8.1 The payment application must be able to be implemented into a secure network environment. Application must not interfere with use of devices, applications, or configurations required for PCI DSS compliance (for example, payment application cannot interfere with anti-virus protection, firewall configurations, or any other device, application, or configuration required for PCI DSS compliance).
PCI Data Security Standard Requirements 1, 3, 4, 5, and 6.6
Testing Procedures:
8.1 Test the payment application in a lab to obtain evidence that it can run in a network that is fully compliant with PCI DSS. Verify that the payment application does not inhibit installation of patches or updates to other components in the environment.