I am not sure if you could do what you suggest. A other possibility however is to create a link like:
In this case you let the deeplink redirect to a microflow with 2 string parameters, 1 is applicationName and the other is SomeParameter. In the deeplink settings you use the Get parameters and seperate these parameters.
Hope this helps.
I was able to reproduce your error when changing the deep link module constant to "applicationname/link". When I changed the value to "applicationname" the deeplink was able to work. My guess is that the request handler gets confused with the slash in between applicationname and link. I didn't debug the code in eclipse to confirm this, but thats my best guess. What are you trying to achieve with "applicationname/link" as your request handler?
I looked through the Java action 'DeepLink.StartDeeplinkJava'. and I found that the custom RequestHandler class 'DeepLinkHandler' does not support a path including '/'.
I duplicated and customized the 'DeepLink.StartDeeplinkJava' and 'DeepLinkHandler' class, consequently it worked well.
I'm sorry to have caused you trouble. Thanks a lot!