This question has been asked before, but unfortunately had no responses: https://forum.solidworks.com/message/23031

The CreateRelativeView method is documented here

http://help.solidworks.com/2013/English/api/sldworksapi/SolidWorks.Interop.sldworks~SolidWorks.Interop.sldworks.IDrawingDoc~CreateRelativeView.html

How do I specify the 2 faces required for the relative view? Trying to use the method now does nothing and returns a null object.