Xcode 10: No setting for Valid Architectures

Question

I cannot find Valid Architectures settings under Project -> Build Settings -> Architectures. When I try to add VALID_ARCHS setting manually by clicking on + on top right, it gives an error

There already is another setting named "VALID_ARCHS". Please enter a different name.

But the setting is not visible.

There is a problem creating an archive in Xcode 10 with an error

'Abort Trap: 6' error in 'UICircularProgressRing'

I am trying to follow the solution provided in this answer: Xcode 10 not being able to archive project but cannot find Valid Architectures Setting in Xcode 10.

Answer 1

It's hidden under 'Basic'. Click 'All' to see it