On the Run page when the Run is in a success or failed state, you can rerun by clicking the Rerun button. The Rerun button There are two possible rerun options.

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1. Run again

This option is always available (when a run has finished). It creates a brand new run with the same inputs as the original – the same Trigger payload, settings, connections etc.
Stating the obvious: this will run all the code again.

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2. Retry job run

This option is only available when the run has failed. It will continue the existing Run by retrying the Task that failed the Job.