Single Access

Single Access is defined by the number of visits to your site that contained a single unique Page Name value. If a user comes to your site and clicks a tracked link, triggers an event (such as a video view), or reloads the page, the visit is still considered a Single Access visit. As long as value for the pageName variable does not change, any number of requests can be sent and the visit is still considered a Single Access.

Uses Description
Traffic The number of times a page or value is captured as the only value. For example, page A is the only page visited, and then the visitor left your site.
Conversion Single access is not a conversion metric.
Ad Hoc Analysis Like traffic, Single Page Visits is the number of times a single page or value is captured as the only value in a visit.

This metric is equivalent to both Single Access AND Bounces in Reports & Analytics, depending on whether Count Repeat Instances is set to Yes or No.

This setting also affects pathing reports like Flows, Next Page, Fallout, etc.