Saving flow data
There are two benefits from turning on the option to save all data that passes through your flows.
Step by step checks
You'll be able to check on a flow after it has run and see the values for all input and output fields at every step. To do this, click on the Flow History tab. You'll see a list of past executions (if any) in the right pane of the page, and you can click on any execution to see the data from that execution. This is the best way to confirm that a flow is running properly or to determine where an error is occurring. The data is available for 30 days.