Can you please elaborate a bit further? What is your use case and which platform do you want to use?
Our client has already developed the application on ionic 2. I tried with existing example given in documentation but was in typescript and no guideline for markerless AR.
Our client wants to see how AC would look on walls in AR without marker.
the Wikitude Ionic starter app is not an official product of Wikitude; it was created and is maintained by a third party. If you experience any issues with it or with its documentation you will need to contact the maintainer.
Having said that, the instant tracking documentation for the official Cordova plugin might be of some help. It can be found here.