光顾实体店时，如果车辆为上车点，则需在车辆装载量的基础上增加预定义的金额；若为送货，则需减去预定义的金额。此消息定义了此类金额。请参阅 loadDemands。
| JSON 表示法 |
|---|
{ "amount": string } |
| 字段 | |
|---|---|
amount |
执行相应访问的车辆的重量会有所不同。由于它是一个整数，因此建议用户选择适当的单位，以避免精度损失。必须大于等于 0。 |
Load
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最后更新时间 (UTC)：2025-08-29。
[null,null,["最后更新时间 (UTC)：2025-08-29。"],[[["\u003cp\u003eThis message defines an amount that will be added to or subtracted from a vehicle's load during a visit.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eamount\u003c/code\u003e field, a string in int64 format, specifies the load variation.\u003c/p\u003e\n"],["\u003cp\u003eThe amount is an integer and must be greater than or equal to 0.\u003c/p\u003e\n"],["\u003cp\u003eAppropriate unit selection is advised to avoid precision loss due to integer usage.\u003c/p\u003e\n"]]],[],null,["# Load\n\n- [JSON representation](#SCHEMA_REPRESENTATION)\n\nWhen performing a visit, a predefined amount may be added to the vehicle load if it's a pickup, or subtracted if it's a delivery. This message defines such amount. See [loadDemands](/maps/tt/route-optimization/experimental/load-cost/reference/rest/v1/ShipmentModel#Shipment.FIELDS.load_demands).\n\n| JSON representation |\n|------------------------------|\n| ``` { \"amount\": string } ``` |\n\n| Fields ||\n|----------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `amount` | `string (`[int64](https://developers.google.com/discovery/v1/type-format)` format)` The amount by which the load of the vehicle performing the corresponding visit will vary. Since it is an integer, users are advised to choose an appropriate unit to avoid loss of precision. Must be ≥ 0. |"]]