| Name | Type | Description | Notes |
|---|---|---|---|
| contract | string | Contract name; server-side converted to uppercase | |
| settle | string | Settle currency, overridden by the path parameter and converted to lowercase | [optional] |
| amount | string | Total order size in contracts, decimal string. Positive for buy, negative for sell. Cannot be 0 | |
| price_limit | string | 最高追逐价，合法十进制字符串；未设置限价时请传 "0" | |
| offset_limit | string | Maximum chasing distance from the best price, mutually exclusive with price_limit | [optional] |
| reduce_only | bool | Whether reduce only | [optional] |
| text | string | Optional custom tag | [optional] |
| is_dual_mode | bool | Whether dual-position mode is enabled | [optional] |
| price_type | int | Price type: 1 best bid/ask, 2 distance from best bid/ask | [optional] |
| price_gap_type | int | Used when price_type == 2: 1 absolute price gap, 2 percentage | [optional] |
| price_gap_value | string | Price gap value paired with price_gap_type | [optional] |
| pos_margin_mode | string | Position margin mode, e.g. isolated or cross | [optional] |
| position_mode | string | Position mode (e.g. single, dual, dual_plus) | [optional] |