{"record":{"id":"4c9de4f82ecc17f8","repo":"BerriAI/litellm","slug":"f-authentication-error-e","errorCode":null,"errorMessage":"f\"Authentication Error({e})\"","messagePattern":"f\"Authentication Error\\((.+?)\\)\"","errorType":"http","errorClass":"ProxyException","httpStatus":400,"severity":"error","filePath":"litellm/proxy/management_endpoints/internal_user_endpoints.py","lineNumber":1590,"sourceCode":"        - key_alias: Optional[str] - [NOT IMPLEMENTED].\n        - object_permission: Optional[LiteLLM_ObjectPermissionBase] - internal user-specific object permission. Example - {\"vector_stores\": [\"vector_store_1\"], \"mcp_servers\": [\"github\"], \"mcp_tool_permissions\": {\"github\": [\"list_issues\"]}}. The MCP grants act as a ceiling on every key this user holds. IF null or {} then no object permission.\n        - prompts: Optional[List[str]] - List of allowed prompts for the user. If specified, the user will only be able to use these specific prompts.\n        - budget_limits: Optional[list] - List of concurrent budget windows for the user. Each window specifies a budget_limit, time_period, and optional budget_duration. Example - [{\"budget_limit\": 10.0, \"time_period\": \"1d\"}, {\"budget_limit\": 50.0, \"time_period\": \"7d\"}].\n\n    \"\"\"\n    try:\n        verbose_proxy_logger.debug(\"/user/update: Received data = %s\", data)\n\n        response: Final = await _update_single_user_helper(\n            user_request=data,\n            user_api_key_dict=user_api_key_dict,\n        )\n        return response\n    except Exception as e:\n        verbose_proxy_logger.exception(\"litellm.proxy.proxy_server.user_update(): Exception occured - %s\", e)\n        verbose_proxy_logger.debug(traceback.format_exc())\n        if isinstance(e, HTTPException):\n            raise ProxyException(\n                message=getattr(e, \"detail\", f\"Authentication Error({e})\"),\n                type=ProxyErrorTypes.auth_error,\n                param=getattr(e, \"param\", \"None\"),\n                code=getattr(e, \"status_code\", status.HTTP_400_BAD_REQUEST),\n            )\n        elif isinstance(e, ProxyException):\n            raise e\n        raise ProxyException(\n            message=\"Authentication Error, \" + str(e),\n            type=ProxyErrorTypes.auth_error,\n            param=getattr(e, \"param\", \"None\"),\n            code=status.HTTP_400_BAD_REQUEST,\n        )\n\n\nasync def bulk_update_processed_users(\n    users_to_update: list[UpdateUserRequest],\n    user_api_key_dict: UserAPIKeyAuth,","sourceCodeStart":1572,"sourceCodeEnd":1608,"githubUrl":"https://github.com/BerriAI/litellm/blob/77b7c6c40c0c5aa5fbcb1d6a1825ac39ca8829b8/litellm/proxy/management_endpoints/internal_user_endpoints.py#L1572-L1608","documentation":"/user/update wraps every failure into a ProxyException with type auth_error. For HTTPExceptions it copies e.detail as the message; the literal 'Authentication Error({e})' text only appears through the getattr(e, 'detail', ...) fallback when the exception carries no detail attribute - rare, e.g. a malformed or bare HTTPException raised deep inside helpers. The response code is the original status_code when present, else 400.","triggerScenarios":"Any exception without a .detail attribute escaping the update pipeline during POST /user/update - a bare HTTPException(), a library-internal raise site, or custom exception types raised by hooks/helpers.","commonSituations":"Version drift where a helper raises a non-standard exception; seeing a generic auth message that actually masks a validation or database problem; debugging from the wrapped message instead of server logs.","solutions":["Read the server logs first - the handler logs 'user_update(): Exception occured' plus the full traceback before wrapping","Fix the underlying exception; in practice it is almost always one of the specific 4xx errors from this file (missing id, permissions, DB)","Upgrade LiteLLM if the traceback shows a library-internal raise site"],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":null,"typeGuard":null,"tryCatchPattern":"except requests.HTTPError as e:\n    body = e.response.json() if e.response is not None else {}\n    err = body.get(\"error\", {}) if isinstance(body.get(\"error\"), dict) else {}\n    if err.get(\"type\") == \"auth_error\" and str(err.get(\"message\", \"\")).startswith(\"Authentication Error\"):\n        # generic wrapper: the real cause is in server logs; do not treat as an auth problem\n        ...","preventionTips":["Correlate client-side 400s with proxy exception logs using timestamps","Do not build logic on the 'Authentication Error' prefix - it wraps many non-auth failures","Pin LiteLLM versions in CI so new raise sites do not surprise you"],"tags":["litellm","error-handling","proxy-exception","user-management"],"backgroundTag":"authentication-failed","analyzedSha":"77b7c6c40c0c5aa5fbcb1d6a1825ac39ca8829b8","analyzedAt":"2026-08-18T11:44:31.656Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}