Introduction The Operational Guidelines Availability & Performance Key Indicators for Availability & Performance Availability Performance Publication of Statistics Reporting PSU Interfaces Reporting Template TPP Reporting Dedicated Interfaces Design & Testing Testing Facility Publishing Specifications Stress Testing Wide Usage Obstacles Problem Resolution Procedures, Processes and Systems for Problem Resolution OBIE Support Change Management Downtime New OBIE Standard Introducing Change Considerations Changes to ASPSP’s Infrastructure Notification of a Change OG Checklist Checklist TPP Guidelines Security Effective Information Security Management Protecting Against Data Breach Technical Security Cyber Security Counter Fraud Measures Counter Fraud Strategy & Operations Fraud Monitoring & Reporting Operational Excellence Issue Resolution Dispute Management System Testing The Approach Participant Journey Test Phase Engagement Change Log