You can try integrating with Vouchsafe in a safe environment using the sandbox API.

It is located at:

app.vouchsafe.id/api/v1/sandbox

The sandbox provides the same dummy endpoints as the live API and will validate the data you provide with your requests as normal, but:

You can simulate retrieving different kinds of case by providing these IDs:

ID Outcome
111 New case with everything to do
222 User steps completed, awaiting final processing
333 Verified case
444 Refused case