Designating a test value as a reference, or a range of test data as a field reference, allows you to use the data elsewhere in the test.
References, usually located in response data, contain values that you want to use from a subsequent test location, usually a request. You can substitute a request value with a reference (called data correlation). You can also use a reference as input to an if/then condition in a test or to custom Java code that your test calls.
Whereas a reference points to a specific value in a test, a field reference points to a range of test data. You can use a field reference as an input argument to an if/then condition or to custom code.
To create a reference or field reference:
Parent topic: Correlating response and request data in a test