I am unable to submit my app EggZap for review. When I navigate to my iOS App Version 1.0 submission page, I can make all edits and save successfully — screenshots, description, keywords, contact info all save without issue. However, as soon as I add a build to the submission and click Save, the button turns red with a ! error indicator and will not save. Removing the build allows the page to save normally again. The build (Build 51) is fully validated and shows as Complete in TestFlight. It is fully playable via TestFlight on my device. I have tried multiple browsers on multiple devices with the same result. Browser console shows a 409 Conflict error from the PATCH endpoint when saving with a build attached. I have already contacted Apple Developer Support (Case ID: 102858642503) but wanted to reach out to the community as well. I have seen other posts about this same issue but no real answer on how it was fixed. Has anyone experienced this? Any suggestions appreciated.

I am unable to submit my app EggZap for review. When I navigate to my iOS App Version 1.0 submission page, I can make all edits and save successfully — screenshots, description, keywords, contact info all save without issue. However, as soon as I add a build to the submission and click Save, the button turns red with a ! error indicator and will not save. Removing the build allows the page to save normally again. The build (Build 51) is fully validated and shows as Complete in TestFlight. It is fully playable via TestFlight on my device. I have tried multiple browsers on multiple devices with the same result. Browser console shows a 409 Conflict error from the PATCH endpoint when saving with a build attached. I have already contacted Apple Developer Support (Case ID: 102858642503) but wanted to reach out to the community as well. I have seen other posts about this same issue but no real answer on how it was fixed. Has anyone experienced this? Any suggestions appreciated.