I'm using GA's Core Reporting API to create a report that shows the top exit pages alongside some behavioural metrics for each page. The dimension is ga:exitPagePath, and the metrics I want are:
ga:exits ga:pageviews ga:entrances ga:avgTimeOnPage ga:bounceRate ga:exitRate
I'm sorting by -ga:exits. I'm not using any filters or segments.
The query appears to work fine, it doesn't retu an error - however the entrances values it retus are incorrect and exactly match the exit values for each page. Other queries for ga:entrances without ga:exits give the correct entrance values.
I may have overlooked it but I can't find anywhere in the documentation indicating that these metrics can't be used together. I also tested creating a custom report within the GA interface with these two metrics and found the same result - no error or indication that I can't create a report with both metrics, but entrances incorrectly reported and exactly matching the exit values. I also get the same result in GA's Query Explorer.
Would love to work this out - it seems perfectly logical to me to want to view entrances alongside exits for exit pages :)