Has been happening to me everyday since year3 season 2 update and Sony patch 5.55
Before that was a very random error.
I have rebuilt database.. not worked. I have reinitialized PS4, reinstalled game, patches, and recreated profile... Didn't work. I have moved PS4 to a location so it has plenty of breathing room to keep from getting hot, but still gets error.
I only see this error while in siege.
Last night it happened during rank game, came back in,andrejoined ranked match only to get kicked again during same match,and unable to get back before match over. Lost rank and banned for 15 min .
Sony/Ubisoft .... Some one please fix!!