Send the merchant's principal a secure link to finish the parts of the application only they can provide.

The server works out exactly what is missing (owners' sensitive details, bank routing and account numbers, ACH consent) and emails a single-use link to the signatory owner, or to the application email if no signatory owner is found. The principal confirms a one-time code before the form opens.

The response contains taskId, expiresAt and the list of fields requested. The link is never returned to you.

If nothing is missing, you get 409 NOTHING_TO_COMPLETE. You can issue at most 3 handoffs per application; after that an underwriter has to get involved.

Authenticate with your agent onboarding API key.