Update up to the bulk-endpoint cap of users in a single request. Pass an array of user payloads in data; each entry must include the target id plus the same patchable fields accepted by PATCH /v3/users/{id}. Each row is processed independently and the response reports per-row success or failure. Use for HRIS-driven backfills of employee_id, office/department reassignments, or job title updates across many users.