Which parameter is generally set to DS default for signing completed documents?

The signing completed URL is a crucial parameter in the DocuSign process as it directs users to a specific location once the signing of a document is completed. Setting this to the default helps maintain consistency in user experience, guiding signers to a predetermined page—often a confirmation page or a site that provides further instructions or next steps.

Using the default signing completed URL simplifies the process for both senders and signers by reducing confusion and ensuring that everyone involved is directed to the correct location automatically after the signing actions are completed. This enhances usability and workflow efficiency within the DocuSign environment.

The other options relate to different aspects of the signing process, such as handling exit points or authentication failures, but they do not specifically pertain to directing users after a document is successfully signed, which is why they are not the correct answer in this context.