Title of a specific stage in projects?

In our projects we first send our clients a report with issues to fix on their website.

How to title the second stage in our projects, when we re-check the website to see if the client indeed fixed the issues in the report?

Is it: "counter-checks" - "re-check" - "repeated test" - "re-testing" -"re-evaluation check"....?

Useful Term

edit review seems a good term for your described use.
First comes the check on your part, then the client edits in regards to your suggestions, your second step is the Edit Review.

As with these back-and-forth checks and edits, a multitude of reviews may occur, so you have an initial review, an undisclosed number of reviews, until you reach a final review.