Updates a resource by its external ID. This is an incremental update, only provided fields will be updated. Fields not included in the request are left unchanged. Null values will explicitly delete the field (required fields cannot be deleted and will return a validation error).
If using a platform scoped JWT, you can pass in a header to impersonate a specific tenant to impersonate the request as.
The name or id of the schema definition for the resource being updated
The external ID of the resource to update
Whether to allow extra fields that are not defined in the schema. If true, extra fields will be accepted but not saved. If false, requests with extra fields will be rejected.