Use this endpoint to generate an electronic signature (SDD mandates only).

Prerequisites:

1. Register your mandate with RegisterSddMandate.
2. Call /documents/{documentid}/signinit  to start the signature flow and obtain a token.
3. Redirect the user’s browser to the WebKit URL, including the token as a GET parameter (see “Finalize document signature”).
4. Provide a return URL to which the user is sent once the signature is complete.

Important: Whenever you see accountId in a path or body parameter, enter your wallet’s ID.