# FAQ

**Q1: How to get API support?**

Join our official API support group and our admins will answer your questions: https://t.me/bitgetOpenapi

**Q2: What does the WebSocket parameter `instId` pass? For example, BTCUSDT_UMCBL or BTCUSDT?**

`BTCUSDT` or `default`. Please refer to the `symbol` value from Get Contract Config.

**Q3: How do I deposit demo coins in Demo Trading?**

First enter the official site for demo trading. On the right side under your Asset section, click the deposit button below it.

Note: you can only claim again 72 hours after your last claim.

**Q4: What are the differences between a Trader's minimum open count and a normal user's?**

Futures Trader's minimum open count: refer to the `minOpenCount` response parameter of Get Copy Trade Symbol Settings. Spot Trader's minimum open count: refer to the `minOpenCount` response parameter of Get Copytrade Configuration.

**Q5: How to get a future's maximum order numbers and position numbers?**

Refer to the `maxProductOrderNum` and `maxPositionNum` response parameters of Get Contract Config.

**Q6: How to know whether you are a trader?**

Refer to the `traderType` response parameter of `GET /api/v2/spot/account/info` (Get Account Information).

**Q7: I am using a third-party server/code and it is not working. How can I get help?**

Unfortunately, we do not provide troubleshooting support for third-party servers or tools. Please contact the third-party customer service for further assistance. In addition, providing your API keys to any other platform carries potential security risk, and it is up to you to decide whether to use their services. Please note that we do not provide coding-related help.

**Q8: If I forget the passphrase of my API key, what should I do?**

The passphrase of an API Key cannot be modified. Please recreate your API Key.

**Q9: What is the rate limit of the API?**

1. The rate limit of each API endpoint is marked on the doc page; 2. The rate limit of each API interface is calculated independently; 3. The overall rate limit is 6000/IP/Min. After the rate limit is triggered, it takes 5 minutes to recover.

**Q10: How can I find out the remaining rate limit per second for the API?**

Please refer to the `x-mbx-used-remain-limit` parameter in the response header.

**Q11: Is there any currency with a different name in the spot market and the futures market?**

Yes, currently there are three currencies with this situation: 1. Luna2 (Futures) — Luna (Spot); 2. ALT (Futures) — $ALT (Spot); 3. MEME (Futures) — MEMECOIN (Spot).

**Q12: Which characters are supported for clientOid?**

`clientOid` supports `[0-9]`, `[a-z]`, `[A-Z]` and `[-,+,_,#]`, with a length less than 50.

**Q13: Is there a fixed regular release date for the backend?**

Yes. The current fixed regular release date for the backend is **every Tuesday and Thursday from 14:00 PM to 18:00 PM (UTC +8)** (except for emergency upgrades). During the regular release time window, the REST API may return 45001, 40725, 40808 or 40015 error responses. Users can retry after receiving these error responses. WebSocket connections may be disconnected during the release period, so WebSocket users are advised to implement a reconnection mechanism in their code.

**Q14: Is it possible to lose messages when subscribing to private channels via WebSocket?**

Yes, there is a possibility of message loss. We recommend users always use the REST API as a fallback.