欢迎查阅 API 调用常见问题解答。如果您在使用过程中遇到以下报错信息，请参考相应的排查建议进行处理。
502 Upstream service temporarily unavailable
Unable to connect API (UND_ERR_SOCKET) OR (ECONNRESET)
Unable to connect API (EAI_AGAIN)
503 Service Unavailable OR 503 No available accounts
429 Upstream rate limit exceeded, please retry later
401 API key is required in Authorization header...
403 API Key is not assigned to any group and cannot be used.
429 api key 日限额已用完
503 No available accounts: this group only allows Claude Code clients
使用 CCSwitch 时出现 503 报错
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