# TRADE Interface

### Request for explanation

* This document is for partners who have applied for the channel number channelId and private key at us.
* Partner requirements: Provide channel name, register account.
* Request type: POST  application/json.
* Error code description:

  | Error code | Explanation                                              |
  | ---------- | -------------------------------------------------------- |
  | 800        | SUCCESS                                                  |
  | 900        | The system is busy, please try again later               |
  | 1100       | The trading pair is invalid                              |
  | 1101       | The trading pair does not exist                          |
  | 1102       | The depth does not exist                                 |
  | 1103       | The trading type is invalid                              |
  | 1104       | The trading price is invalid                             |
  | 1105       | The trading price accuracy is too long                   |
  | 1106       | The trading amount is invalid                            |
  | 1107       | The trading amount accuracy is too long                  |
  | 1108       | The minimum trading amount cannot be lower than 0.01 ETH |
  | 1109       | The minimum trading sum cannot be lower than 0.01 ETH    |
  | 1110       | Cancellation successful                                  |
  | 1111       | Cancellation fail                                        |