Use this endpoint to update a specific existing Signup. A record of this change is displayed in the VAN UI.
A Signup’s Event and Person properties are immutable after creation. If you want to sign up a Person for a different Event, first delete the existing Signup and create a new one.
If you do not know the eventSignupId, consider using the create or modify endpoint.
When a Signup is updated, a canvass response is generated to represent the signup interaction. The Input Type is API, the Date Canvassed is the current date, the Canvasser is the API user associated with the current context, and the Result Code corresponds to a result most appropriate for the given Status (e.g., Scheduled → Canvassed). Consult the VAN UI for a detailed mapping.
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