@edford in your example, you have <UUID>.bcsymbolmap representing that the UUID value needs to be provided. I did a quick test and verified that I'm not able to just pass the path to the BCSymbolMaps directory, but rather need to pass the path to a specific .bcsymbolmap file. Since the UUID value changes between builds, it would be ideal to have an easy way to pass anything in the directory. Do you know of any way to specify a wildcard that would grab everything in the directory, or would we need to setup separate logic to dynamically get the list of available bcsymbolmap files and build up an xcodebuild command that uses them explicitly?

Thanks @edford. I've submitted Feedback Assistant report FB8339148 and have linked to this thread from the ticket.