Reassigns the reviewers on an approval. For more information, see Manage approvals. Adds or replaces reviewers in the ReviewerResponse of the approval. This can be called by any user with the writer permission on the file while the approval Status is IN_PROGRESS and the Response for the reviewer being reassigned is NO_RESPONSE. A user with the reader permission can only reassign an approval that's assigned to themselves. Removing a reviewer isn't allowed.