BerriAI/litellm · error · Exception

LiteLLM Managed File object with id=

Error message

LiteLLM Managed File object with id={file_id} not found. Checked model id's: {specific_model_file_id_mapping.keys()}. Errors: {exception_dict}

What it means

afile_content iterates every (model_id -> provider_file_id) mapping for the unified file, injects each deployment's server-side credentials, and collects per-model failures into exception_dict. When all provider attempts fail it raises this aggregate naming the models checked and each underlying error, so the real causes are in the embedded dict.

Solutions

Parse the Errors dict in the message and fix the dominant cause (401/403 = credentials, 404 = expired/deleted copy, 5xx = transient)
Re-upload the file via POST /v1/files to mint fresh provider copies on all models
For partial failures, fix credentials on failing deployments and retry — other mappings may already work
Retry with backoff when every entry is 5xx/network class

Defensive patterns

Strategy: try-catch

Try / catch

try:
    content = await proxy.files.content(file_id)
except Exception as e:
    msg = str(e)
    if "Checked model id's" in msg:
        errors = msg.split("Errors: ", 1)[1]  # per-model dict of causes
        if all(code in errors for code in ("401", "403")):
            fix_credentials()
        elif "404" in errors:
            reupload_file()
        else:
            retry_with_backoff()
    else:
        raise

Prevention

Download file content soon after upload, before provider expiry windows lapse
Keep credentials for every mapped deployment healthy — one mapping succeeding is enough

When it happens

Trigger: GET /v1/files/{id}/content where every provider copy is unavailable: files expired or deleted provider-side on all mapped deployments, invalid credentials for each mapped model, or provider-wide 5xx.

Common situations: Multi-model uploads left past provider retention (OpenAI ~1h default expiry); enterprise-wide key rotation breaking every deployment; a single cloud outage taking out all copies at once.

Related errors

AI-assisted analysis of BerriAI/litellm@77b7c6c40c (2026-08-18). Data as JSON: /api/errors/f719f6f606d5d64b. Report an issue: GitHub.

Appendix: source

Thrown at enterprise/litellm_enterprise/proxy/hooks/managed_files.py:1604

        specific_model_file_id_mapping = model_file_id_mapping.get(file_id)

        if specific_model_file_id_mapping:
            exception_dict = {}
            for model_id, provider_file_id in specific_model_file_id_mapping.items():
                try:
                    # Cloud-storage providers (e.g. Bedrock S3) validate file ids
                    # against the deployment's configured bucket, which they only
                    # trust from this immutable server-side snapshot, never from
                    # request params.
                    credentials = llm_router.get_deployment_credentials_with_provider(model_id=model_id)
                    if credentials is not None:
                        data["_litellm_internal_model_credentials"] = cast(Dict, MappingProxyType(dict(credentials)))
                    else:
                        data.pop("_litellm_internal_model_credentials", None)
                    return await llm_router.afile_content(model=model_id, file_id=provider_file_id, **data)  # type: ignore
                except Exception as e:
                    exception_dict[model_id] = str(e)
            raise Exception(
                f"LiteLLM Managed File object with id={file_id} not found. Checked model id's: {specific_model_file_id_mapping.keys()}. Errors: {exception_dict}"
            )
        else:
            raise Exception(f"LiteLLM Managed File object with id={file_id} not found")

    async def _convert_storage_files_to_base64(
        self,
        messages: List[AllMessageValues],
        file_ids: List[str],
        litellm_parent_otel_span: Optional[Span],
    ) -> None:
        """
        Convert files stored in storage backends to base64 format for Vertex AI/Gemini.

        This method checks if any managed files are stored in storage backends,
        downloads them, and converts them to base64 format in the messages.
        """
        # Check each file_id to see if it's stored in a storage backend

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