Catchpoint Search: How to find the Test ID?

I am new to Splunk and Catchpoint. I followed the setup steps below. How can I find the test ID on catchpoint? Is it in Splunk? or does it already exist somewhere in Catchpoint? Navigate to Settings > Data inputs and locate Catchpoint Modular Input. On the right-hand side of the located row, select Add New. To begin ingesting Catchpoint data within Splunk, supply the required values for Catchpoint Input Name and Test ID. Catchpoint Input Name is used only for labeling the tests json.