App Store refuses my update after installing Xcode 11 beta with keeping Xcode 10.2

Upload App With OS Beta

Don't use Xcode beta

Archive the app; before start upload go

Window -> Organizer

Right click in your app

Show in finder

Will open the folder and you go right click in your app and select

New Terminal Tab at folder

Now you will find the pList to change info

cd Products/Applications/“AppCompany”.app/

Finally will change your BuildMachineOSBuild

open Info.plist

Find the BuildMachineOSBuild and change to build Mojave ( January 22, 2019 )

18D42

The answer to this question was provided by Warren (aka dodgio) on the Apple Developer Forums:

This appears to be the app store thinking that the new OS X version 10.11.6 (15G1004) with security patch is a beta version of OS X.

I was able to submit without warnings or errors by digging into the .xcarchive and modifying the info.plist of the app.

Change the key

<key>BuildMachineOSBuild</key>

     <string>15G1004</string>

to the value for the original 10.11.6

<key>BuildMachineOSBuild</key>

    <string>15G31</string>

Then export the IPA or submit to the app store as usual.