Introduction The Guidelines Availability & Performance Key Indicators 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 Change OG Checklist Checklist Change log