After uploading a build to TestFlight and successfully testing it, I encountered an issue when attempting to purchase a subscription again. The error message received was as follows:
PlatformException(9, The receipt is missing., {underlyingErrorMessage: , readable_error_code: MISSING_RECEIPT_FILE, userCancelled: false, message: The receipt is missing., code: 9, readableErrorCode: MISSING _RECEIPT_FILE}, null)
Upon reviewing various answers and information, it appears that this error is likely occurring due to the sandbox environment. However, I would like to seek confirmation regarding whether the purchase will function properly once the application is submitted for release.