App 2 App travel, where to begin in implementing this in Unity

I am trying to use the app 2 app travel api for my apps, but I am not sure how to enable Group Launch receiving app. 

I have created a destination for each app. 

but is failing when I call this 

"type":"OAuthException","code":100,"error_subcode":1891474,"is_transient":false,"error_user_title":"Destination API Name Does Not Exist","error_user_msg":"The API Name you have specified for the Destination does not exist for this Application Grouping."
Do i have to upload the app to oculus for the both apps or is all functionality done in unity, bit lost on all this any help would be appreciated.