iOS app has mysterious UUID with no matching dSYM so cannot symbolicate
Looks like I found the solution.
It's possible in case you set Bitcode enabled. To get necessary dSym you should either use "Download dSYMs..." button (Xcode / Organizer / Your Archive - right panel with archive information) or download them from iTunes Connect (Activity tab, link in build's details ).
Last option helped in my situation.
- dSYM stored inside your .xcarchive Right click on archive in organiser then show package content. It should be there.