It is a good practice to verify your scenarios before creating tests based on a scenario or after editing a scenario. Verification is like debugging - it helps you make sure that your scenarios work correctly.
You can –
Verify a scenario. LoadComplete will simulate a scenario with a single virtual user to check the scenario’s requests and responses. This way you can find such issues as missing login requests, unhandled dynamic parameters, and so on.
Verify a test created from a scenario. Run your tests with a small number of virtual users to check playback options you set for your test.