十四、接口报错：51010 Request unsupported under current account mode 这个跟您的账户模式有关系，如果您要下单现货杠杆或合约，需要调整为除现货模式外的其他3种模式！您可以通过接口：https://www.okx.com/docs-v5/zh/#trading-account-rest-api-set-position-mode 设置，也可以在网页或 App 上设置；注意：首次设置必须要在页面或 App 上设置：交易页面右上角设置图标-账户模式。十五、接口报错：51121 Order quantity must be a mult IP le of the lot size. 在 API 中合约下单是以张为单位的，必须是该币对最小下单数量的倍数，最小下单数量可以通过产品接口：https://www.okx.com/docs-v5/zh/#public-data-rest-api-get-instruments 的minSz 字段获取。

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