If your API isn't working as you'd expect, there is a wealth of information already available for you in API Connects analytics. To find the details of an individual API call, you can do the following:

• Identify the Product from the dashboard and click it to show the contained apis.
• Identify the API from the list and click on the graph icon to view Analytics data for that API.
• Select the error code from the pie chart and then click on the left hand magnifying glass with a + in.
• Click on the arrow at the bottom of the bar chart to switch to table view
• Click View Events, and scroll down through the data available.

See the steps in the following animation:

Once you have the data in front of you, some of the key things to look for are:

• The latency info showing an invoke occuring - this would point to issues in the backend system

• To show even more detailed data, you can add the 'Apim-Debug: true' header to your api call and then you will see the debug data in the Analytics as well.