Your NPS survey has the ability to add a unqiue client id to help in identify your submitters response. This is an optional field.
In many cases your NPS survey may be submitted annonymously. This is fine. If no client id is provided by you, then the NPS survey will attempt to collect the users IP Address of the user.
If you know the ID of the user being prompted to fill out the survey, you can provide those details by adding a “npsClientId” attribute to your npsWrapper element.
In the example above I have added the npsClientId attribute to my npsWrapper element. I can use a scripting language such as PHP, etc to populate the User ID instead of my placeholder text of “my-client-id”.