Hi
I think this doc explains it a bit below , my understanding of it based on our multiple accounts is its where all your actual serial numbers are registered under one or more Cisco accounts with the partners we purchase off , we have accounts with Vodafone , NTT and ATT , each account number contains all the kit we bought off them , so its registered and cases can be raised against it with Cisco and to show its under support and be tracked that way too through the partners , there's different levels of partner relationship , in EMEA we need to raise through the ISP when raising case but in North America and Asia we can go direct with our kit but I think that's because of how much and how exactly it was purchased , the minute we raise a case Cisco can check what support it has who its with and even if we our entitled through our partner account to raise it or go through the ISP partner itself
https://www.cisco.com/web/help/reg/ben/registered-partner-minimum-eligibility-requirements.html
