Flow Navigation Actions | Using Components | Lightning Aura Components Developer Guide

The availableActions attribute lists the valid navigation actions for that screen.

A screen’s available actions are determined by:

Where in the flow the screen is. For example, Previous isn’t supported on the first screen in a flow, Finish is supported for only the last screen in a flow, and you can never have both Next and Finish.
Whether the flow creator opted to hide any of the actions in the screen’s Control Navigation settings. For example, if Pause is de-selected, the Pause action isn’t included in availableActions.

Here are the possible actions, their default button label, and what’s required for that action to be valid.

Action	Button Label	Description
`NEXT`	Next	Navigates to the next screen
`BACK`	Previous	Navigates to the previous screen
`PAUSE`	Pause	Saves the interview in its current state to the database, so that the user can resume it later
`RESUME`	Resume	Resumes a paused interview
`FINISH`	Finish	Finishes the interview. This action is available only before the final screen in the flow.

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