Using tracking parameters is an excellent way for tracking visitors from paid advertisements.
Tracking parameters facilitates distinction of paid advertisements from other traffic sources. But an issue could pop up anytime while using these parameters in the form of search engine indexing both your urls which includes your original url as well. This is as if you are having a duplicate url for your main url.
Putting a 301 redirect from duplicate url to original url would eliminate your chances of tracking the paid advertisements. So what are you going to do now? Don't worry there is way to fix this issue. Adding a canonical url tag to your duplicate page by specifying the original url can wipe of all your concerns.
By including a canonical url tag you are informing the search engines about your original url. Search engines not only leave out the duplicate page from its index but also transfers all the search engine metrics to the original url.