Route Optimization API

[dodomui]

When trying with the example according to Google provided. I received error below.
Anyone could advise?

Error Message
{"code":3,"details":"INVALID_REQUEST: Validation caught 1 error(s). Here is the first one: In shipments[0].pickups[0]: arrival_indexanddeparture_index should always both be present if (and only if) the request uses index-based locations (2)","metadata":{"endpoint-load-metrics-bin":[{"type":"Buffer","data":[49,93,227,154,112,244,2,211,63,73,184,207,164,158,24,177,178,63]}],"grpc-server-stats-bin":[{"type":"Buffer","data":[0,0,77,213,43,71,0,0,0,0]}],"pc-high-bwd-bin":[{"type":"Buffer","data":[75,103,73,89,69,81]}]},"note":"Exception occurred in retry method that was not classified as transient"}

Code

const response = await routeoptimizationClient.optimizeTours({
            "parent": "projects/1081295492861",
            "populate_polylines": true,
            "populate_transition_polylines": true,
            "model": {
              "shipments": [
            {
              "deliveries": [
                {
                  "arrival_location": {
                    "latitude": 37.789456,
                    "longitude": -122.390192
                  },
                  "duration": {seconds: 250}
                }
              ],
              "pickups": [
                {
                  "arrival_location": {
                    "latitude": 37.794465,
                    "longitude": -122.394839
                  },
                  "duration": {seconds: 150}
                }
              ]
            },
            {
              "deliveries": [
                {
                  "arrival_location": {
                    "latitude": 37.789116,
                    "longitude": -122.395080
                  },
                  "duration": {seconds: 250}
                }
              ],
              "pickups": [
                {
                  "arrival_location": {
                    "latitude": 37.794465,
                    "longitude": -122.394839
                  },
                  "duration": {seconds: 150}
                }
              ]
            },
            {
              "deliveries": [
                {
                  "arrival_location": {
                    "latitude": 37.795242,
                    "longitude": -122.399347
                  },
                  "duration": {seconds: 250}
                }
              ],
              "pickups": [
                {
                  "arrival_location": {
                    "latitude": 37.794465,
                    "longitude": -122.394839
                  },
                  "duration": {seconds: 150}
                }
              ]
            }
          ],
          "vehicles": [
            {
              "end_location": {
                "latitude": 37.794465,
                "longitude": -122.394839
              },
              "start_location": {
                "latitude": 37.794465,
                "longitude": -122.394839
              },
              "cost_per_kilometer": 10.0,
              "cost_per_hour": 40.0
            }
          ]
            //   "globalStartTime": "2024-12-13T00:00:00.000Z",
            //   "globalEndTime": "2024-12-14T06:00:00.000Z"
            }
        });