'SDK Version Issue.This app was built with the iOS 14.5 SDK

ERROR ITMS-90725: "SDK Version Issue. This app was built with the iOS 14.5 SDK. All iOS apps submitted to the App Store must be built with the iOS 15 SDK or later, included in Xcode 13 or later.

My current version is macOs Big Sur version(11.4) and my xcode version(12.5.1)

Solution 1:[1]

You need XCode 13 to use iOS 15 SDK. Simply update your XCode and MacOS (if necessary), then build the app again.

After updating XCode, your iOS SDK will be automatically updated.

Instruction for Older macOS:


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Source: Stack Overflow

Solution Source
Solution 1