GET vs POST in SEO

Question

the web application creates a page for all the form submissions and this form is submitted to same  url each time there is a different title tag when the page is loaded each time does this mean that there are different page with the same url  will it effect my seo

Answer 1

the one way is to format your url  to a unique page using a rewriter rule if you if you continue loading to the same page then google will always index to that page