Over the course of three calls in one day about a week ago, Smartthings Support had me do this same procedure, but additionally, a) move the lock WITHIN ONE FOOT of the hub, and b) repeat the exclusion of the lock three times in a row, and c) unplug the hub and remove the batteries.
The result - I was able to add the lock back in to the hub, but I was NOT able to resolve the 0000 MSR issue. ST support insisted that the MSR issue is irrelevant. They went so far as to question whether my lock had ever registered anything more (during the ~18 months that it functioned flawlessly).
I know we’re all focused on MSR detection being “the issue” in these forums, but can we articulate WHY/WHAT function is dependent on that populating other than 0000? My lock now works, but I’ve lost the notifications that worked prior to my update to the 5.05.0x version of RBoy’s Smartapp. This happened roughly at the same time as the ST firmware and app updates in my case, so it is murder for someone like me to parse out. Does the problem lie in hardware or software? ST hub firmware vs. ST app vs. RBoy DH vs. Rboy Smartapp? I’m logical and scientific, but not a coder. Nor did I get in this game to become one. I’d prefer this to make my life easier not harder (grin).