Question: I have this settings:

[![enter image description here](https://i.stack.imgur.com/ddcI8.png)](https://i.stack.imgur.com/ddcI8.png)

In XCode interface builder, I have added constraints. Now the red one between "S...gs" button and right "large" button is set to "greater than or equal", but it gives me error about missing constraint for position X. If I cnage this constraint to "equal" error is gone. What is wrong here? 

EDIT:
Maybe its "conflicting" with some other constrains I have. I am adding full storyboard settings for the view controller

(Plus there are also some "programatically" added constraints during execution, but those should not affect XCode storyboard)

[![enter image description here](https://i.stack.imgur.com/NdzNN.png)](https://i.stack.imgur.com/NdzNN.png)

Answer: 
Add both the constraints in storyboard (equal to & greater than or equal to). And check the option "Remove at build time" for the **equal to** constraint
[![Check here](https://i.stack.imgur.com/oCiop.png)](https://i.stack.imgur.com/oCiop.png)
An inequality constraint is not enough for Auto Layout to know exactly where to place your wide button. As I can see, you haven't specified neither a trailing constraint nor a width constraint for your wide button, so Auto Layout does not know where to put it. Try adding a trailing constraint from the wide button to the superview and you should get what you want.