Skip to main content
A Box Sign request that has not yet been signed or declined can be cancelled using the . Any outstanding signers can no longer sign the document. Only the requester (the user who created the request) can cancel it. You can’t cancel a request that was declined, fully signed, or whose document is still converting.

Cancel a request

Provide a cancellation reason

The request body accepts an optional reason field describing why the request was cancelled.
cURL
The v10 SDK methods shown above cancel a request without sending a body, so call the endpoint directly to set a reason.

Control signer notifications

Signer notifications are configured per signer when the request is created, not when it is cancelled, so the cancel endpoint takes no notification parameters. To turn the default emails off and send your own, see .
Last modified on August 7, 2026