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 ≥ 0。 |
Load
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最后更新时间 (UTC)：2025-08-31。
[null,null,["最后更新时间 (UTC)：2025-08-31。"],[[["\u003cp\u003eThe \u003ccode\u003eShipment.Load\u003c/code\u003e message defines the amount added or subtracted from a vehicle's load during a pickup or delivery.\u003c/p\u003e\n"],["\u003cp\u003eThis amount is represented by the \u003ccode\u003eamount\u003c/code\u003e field in the JSON representation, which is a string formatted as an \u003ccode\u003eint64\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eamount\u003c/code\u003e value must be non-negative and users should choose an appropriate unit to maintain precision.\u003c/p\u003e\n"],["\u003cp\u003eRefer to \u003ccode\u003eloadDemands\u003c/code\u003e for how this message is used within the broader context of route optimization.\u003c/p\u003e\n"]]],["The provided content describes the \"amount\" field within a JSON representation used for vehicle load adjustments during visits. This \"amount\" is a string representing an integer that modifies a vehicle's load. During a pickup, the amount is added, and during a delivery, it's subtracted. The amount must be greater than or equal to zero. The content advises users to select an appropriate unit of measure for precision, given that this is an integer.\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/documentation/route-optimization/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. |"]]