Error codes & enums

Standard error payload: `{"code": -1121, "msg": "Invalid symbol."}` (spot).

Futures wraps it as `{"code":"-1121","succ":false,"msgData":null,"msg":"..."}`.

Code	Name	Meaning
-1000	UNKNOWN	Unknown error (often a bad symbol/contract name).
-1001	DISCONNECTED	Internal error; unable to process. Retry.
-1002	UNAUTHORIZED	X-CH-APIKEY missing from headers.
-1003	TOO_MANY_REQUESTS	Requests too frequent; rate limit exceeded.
-1004	NO_THIS_COMPANY	User/company does not exist.
-1006	UNEXPECTED_RESP	Order status UNKNOWN (message-bus issue).
-1007	TIMEOUT	Backend timeout; send/exec status unknown.
-1014	UNKNOWN_ORDER_COMPOSITION	Unsupported order combination.
-1015	TOO_MANY_ORDERS	Order count exceeds the maximum.
-1016	SERVICE_SHUTTING_DOWN	Service no longer available.
-1017	NO_CONTENT_TYPE	Attach Content-Type: application/json.
-1020	UNSUPPORTED_OPERATION	Operation not supported.
-1021	INVALID_TIMESTAMP	Timestamp offset too large vs server time.
-1022	INVALID_SIGNATURE	Signature verification failed.
-1023	UNAUTHORIZED	X-CH-TS missing from headers.
-1024	UNAUTHORIZED	X-CH-SIGN missing from headers.
-1100	ILLEGAL_CHARS	Illegal characters in a parameter.
-1101	TOO_MANY_PARAMETERS	Too many parameters for this endpoint.
-1102	MANDATORY_PARAM_EMPTY	Required param null, missing or malformed.
-1103	UNKNOWN_PARAM	Unknown parameter sent.
-1104	UNREAD_PARAMETERS	Not all sent parameters were read.
-1105	(empty)	A required parameter was empty.
-1106	PARAM_NOT_REQUIRED	A parameter was sent when not required.
-1111	BAD_PRECISION	Precision exceeds the maximum for this asset.
-1112	(empty)	No pending orders / order to cancel does not exist.
-1116	INVALID_ORDER_TYPE	Must be LIMIT or MARKET.
-1117	INVALID_SIDE	Must be BUY or SELL.
-1121	BAD_SYMBOL	Invalid or missing symbol / contract.
-1136	ORDER_QUANTITY_TOO_SMALL	Order volume below the minimum.
-1138	ORDER_PRICE_WAVE_EXCEED	Order price outside permissible range.
-1139	ORDER_NOT_SUPPORT_MARKET	Pair does not support market trading.
-1145	(empty)	Order status does not allow cancellation.
-1147	PRICE_VOLUME_PRESION_ERROR	Price/quantity precision exceeds max.
-2013	NO_SUCH_ORDER	Order does not exist.
-2015	REJECTED_CH_KEY	Invalid key, IP not whitelisted, or no permission.
-2016	EXCHANGE_LOCK	Transactions frozen / exchange lock.
-2017	balance_not_enough	Insufficient balance.
-2100	PARAM_ERROR	Parameter error (futures-only code).
-2200	(empty)	Illegal / untrusted IP.
35	(empty)	Forbidden to order (account may be restricted).
10015	(empty)	Exceeded the close available (close/stop order with no open position).

Enums

• Order status (live): spot create returns int 0, then GET returns NEW -> PENDING_CANCEL; futures INIT -> PENDING_CANCEL. Cancellation is ASYNC (returns PENDING_CANCEL, not immediate CANCELED).

• Order types: LIMIT, MARKET.

• Order sides: BUY, SELL.

• Kline intervals: spot = 1min,5min,15min,30min,60min,1day,1week,1month (1h returns []); futures = 1min,5min,15min,30min,1h,1day,1week,1month. 4h is not accepted.