global cache - same message id

[antje-s]

Under 7.2.1.15. Duplicate notification discarding (alternative)
"Where a Global Cache fails to process a notification message with a given unique identifier (id), a Global Cache must attempt to process subsequently received notification messages with the same unique identifier."

Actually, no different messages should be permitted to be on the road with the same id, right? This means that a global cache can always assume that if it has recognised a message with an id as faulty, it can simply discard other messages with the same id as duplicates (without processing them again)