• Access credentials
• Acknowledgements and non-repudiation
• Differentiating inserts from updates
• ERN messages as a statements of truth
• File naming convention for DSR masterlist reports
• Generating and processing ERN batches
• MEAD messages as a statement of truth
• MEAD information for a taken-down release
• MEAD messages as secondary resources in an ERN feed
• No resources in initial delivery
• Order of ERN processing
• Prioritisation of ERN messages
• Signalling rights conflicts in ERN-C status updates
• Update Indicator