@DTS Engineer Sorry for the misunderstanding. I’m focusing the problem description on “Xcode 16 warning about missing symbols.” Goal: To submit my build with Xcode 16 to App Store Connect with dSYM included without getting warnings (see image ). Xcode 16: When I create an archive in Xcode 16 and submit it to App Store Connect, I receive the following warnings: “Upload Symbols Failed…” Xcode 15: When I create an archive in Xcode 15 and submit it to App Store Connect, I receive no warnings and the dSYM files are included. Xcode 16 (Using Custom Distribution & Transponder App): When I use Xcode 16 and select the distribution method as “Custom” -> “App Store Connect” > “Export”, and then upload the “app-name.ipa” via the Transponder app to App Store Connect, I receive no warnings and the dSYM files are included. I hope this clarification helps you better understand the issue.​ – Thomas

I want to summarize my findings: Firebase libraries, such as Firebase, usually provide dSYM files correctly. Maybe this helps to evaluate possible solutions Xcode 16: There is a warning: “empty dSYM file detected, dSYM was created with an executable with no debug info” when archiving in Xcode 16. This leads to dSYM files not being properly generated for certain frameworks. Xcode 15: This issue did not occur in Xcode 15. The dSYM files were generated correctly, and there were no related warnings TransponderApp: When using the TransponderApp, the dSYM files are generated correctly, and there are no warnings or errors regarding missing dSYM files I assume Firebase libraries generally support dSYM files for debugging, but issues with dSYM generation might occur, especially in Xcode 16. Xcode may fail to generate them correctly.