Same issue here, Xcode 16 build on previously working Xcode 15. It looks like Xcode 16’s settings conversion is clearing the setting, or has changed the default setting for Debug Information Format. I’ve found the following removes the error and allows distribution. Go to your target's Build Settings and enter "debug information format" in the search field. For Debug, Release and Test, make sure the setting is "DWARF with dSYM File". Now Clean Build Folder and then Archive.