The 302 status code is a redirection message that occurs when a resource or page you're attempting to load has been temporarily moved to a different location. It's usually caused by the web server and doesn't impact the user experience, as the redirect happens automatically.
When to Use 302 Redirects
Use a 302 if you want to bring the old page back later. A 302 redirect can also be used as a way to test out a new web page and get consumer feedback without hurting your rankings from the original webpage that is being redirected.
A 302 redirect will not affect your SEO if it is done correctly. The old page remains indexed by Google, so it won't lose any link equity to the new one, which is just temporary. That means you'll retain your rankings, traffic value, and authority with no problems.