I want to make sure my GW7 system is in a good condition before I upgrade to GW8. What error should I pay attention to?

I searched the word "error" and found many occurrence of "Error 83- Item failed to archive" and "rc=Unknown Error 0x8E03 (0x8E03)"

Are these error concerning for the upgrade? I believe for Error 83, I have to tell the user to local the message and delete it but I don't thing my users will do that:(

Thanks in advance.