Test Data is data that you define and use while building.
When making Builds you often want to inspect how your Build is comming along. To avoid setting up a front-end or use third-party apps to test your Builds web-hook, simply define test data.
To define the test data, type or paste it into the settings of the Block. We provide you with feedback about the data being formed correctly. Put in what you need in order to test your build.
As many as you like. It is a data block, and data blocks can connect out to as many logical or integration blocks as you like.