{"record":{"id":"3ad75d9e2aaad37c","repo":"BerriAI/litellm","slug":"file-id-is-required-for-bedrock-file-content-retri","errorCode":null,"errorMessage":"file_id is required for Bedrock file content retrieval","messagePattern":"file_id is required for Bedrock file content retrieval","errorType":"validation","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"litellm/llms/bedrock/files/transformation.py","lineNumber":1230,"sourceCode":"    ) -> list[OpenAIFileObject]:\n        raise NotImplementedError(\"BedrockFilesConfig does not support file listing\")\n\n    def transform_file_content_request(\n        self,\n        file_content_request: FileContentRequest,\n        optional_params: Mapping[str, object],\n        litellm_params: MutableMapping[str, object],\n    ) -> tuple[str, dict[str, str]]:\n        \"\"\"\n        Build a SigV4-signed S3 GetObject request for a Bedrock batch file.\n\n        Bedrock batch file ids are `s3://bucket/key` URIs (or unified ids\n        that decode to one); the bucket and key are validated against the\n        server-configured bucket before any request is signed.\n        \"\"\"\n        file_id: Final = file_content_request.get(\"file_id\")\n        if not file_id:\n            raise ValueError(\"file_id is required for Bedrock file content retrieval\")\n\n        s3_uri: Final = extract_s3_uri_from_file_id(file_id)\n        bucket_name, object_key = _validate_file_id_against_configured_buckets(\n            s3_uri=s3_uri,\n            configured_bucket_names=get_configured_s3_bucket_names(litellm_params),\n            allow_legacy_cloud_file_ids=should_allow_legacy_cloud_file_ids(litellm_params),\n        )\n\n        # The shared file-content handler passes optional_params={}, so AWS\n        # credentials/region arrive via litellm_params here (unlike the upload\n        # path). s3_region_name wins over aws_region_name, same priority as\n        # get_complete_file_url above.\n        merged_params: Final[dict[str, object]] = {}\n        merged_params.update(litellm_params)\n        merged_params.update(optional_params)\n        request_params: Final = _BedrockS3RequestParams.model_validate(merged_params)\n\n        region_preference: Final = request_params.s3_region_name or request_params.aws_region_name","sourceCodeStart":1212,"sourceCodeEnd":1248,"githubUrl":"https://github.com/BerriAI/litellm/blob/77b7c6c40c0c5aa5fbcb1d6a1825ac39ca8829b8/litellm/llms/bedrock/files/transformation.py#L1212-L1248","documentation":"The Bedrock file-content path builds a SigV4-signed S3 GetObject request from the file id; without a file id there is nothing to sign or fetch, so transform_file_content_request raises before any bucket validation or signing. This guards the GET /v1/files/{id}/content route for Bedrock deployments.","triggerScenarios":"client.files.content(\"\") or a f-string file id that evaluated empty (file_id=\"/v1/files//content\" style URLs); code that reads the id from a variable that was never populated because the create call failed earlier.","commonSituations":"Chaining create→content where create errored and the id stayed None/empty; template URLs with missing interpolation; API integrations passing query params straight through without presence checks.","solutions":["Check the file id is a non-empty string before calling content()","Capture and propagate create-file errors so downstream code never runs with an unset id","On the proxy, reject /v1/files//content early with a 400"],"exampleFix":"# before\ncontent = await client.files.content(file_id)  # file_id may be \"\"\n\n# after\nif not file_id:\n    raise ValueError(\"file_id missing — did create_file succeed?\")\ncontent = await client.files.content(file_id)","handlingStrategy":"validation","validationCode":"def fetch_content(client, file_id: str | None):\n    if not file_id or not isinstance(file_id, str):\n        raise ValueError(\"file_id must be a non-empty string (was the create call successful?)\")\n    return client.files.content(file_id)","typeGuard":"def is_valid_file_id(file_id: object) -> bool:\n    return isinstance(file_id, str) and bool(file_id.strip())","tryCatchPattern":"try:\n    content = await client.files.content(file_id)\nexcept ValueError as e:\n    if str(e) == \"file_id is required for Bedrock file content retrieval\":\n        file_id = (await create_batch_file()).id  # recover the real id\n        content = await client.files.content(file_id)\n    else:\n        raise","preventionTips":["Propagate create-file errors so downstream code never holds an empty id","Validate the id variable is non-empty before any content call","Reject /v1/files//content-style URLs with 400 at the proxy edge"],"tags":["bedrock","files-api","missing-parameter","s3","litellm"],"backgroundTag":"missing-required-argument","analyzedSha":"77b7c6c40c0c5aa5fbcb1d6a1825ac39ca8829b8","analyzedAt":"2026-08-18T11:44:31.656Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}