Listing all possible test case names which could be extracted out of the scenario provided and classifying them in terms of priority and positive/negative/types is test case enumeration. Kindly comment if you need anything, here is an example for better understanding. Enumerate test cases for Login:(Classifying priorities into P1>P2>P3) Positive cases include: P1-Verify the login dialog box P1-Verify the login id P1-Verify the password P1-Verify the submit button Negative cases include: 1. P3-Verify logging in with empty id and password fields Note: Haven't covered all the test cases.