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