Checking your API health in the partner portal is a great way to ensure that your results are being displayed on Skyscanner. Any sign of failure rates above 5% and/or no result rates above 15% should be cause for concern. If your account manager is not already working with you to resolve the issue, you should reach out to them whenever you notice a concerning success rate.
If you visit https://partnerportal.skyscanner.net/api-health/ and click on the "Failure" tab, you can see the API calls that resulted in error responses. If you expand the error type tab, you can see more details about the specific error type. You can follow these steps to see examples of other types of errors.
Similarly, you can see details about the "No Result" instances, where our system has requested fares and yours responded with no availability.