I'm a bit confused. Maybe someone can help me with that.
I have the following scenario. I get 400 individual links ( an individual id for each user) to my survey from a external usergroup. At the end of the survey the user receives the unique link with that Id plus an indicator that he finished the survey. With this link he goes to the service provider and receives his payment for participating on the survey.
My questions is how can I pass through this specific id I get from the service provider.
at the general settings you will find the part 'Panel integration'. Here you can define where your indicators can be stored and then be passed to the end-url.
You are also free to use an expression within yor end-url to differ eg between finished, outscreened and drop-outs.