[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["わかりにくい","hardToUnderstand","thumb-down"],["情報またはサンプルコードが不正確","incorrectInformationOrSampleCode","thumb-down"],["必要な情報 / サンプルがない","missingTheInformationSamplesINeed","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["その他","otherDown","thumb-down"]],["最終更新日 2025-09-02 UTC。"],[],[],null,["# Troubleshoot managing deployed agents\n\nThis document describes how to resolve errors that you might encounter when\n[managing deployed agents](/vertex-ai/generative-ai/docs/agent-engine/manage/overview).\n\nError when filtering the list of agents\n---------------------------------------\n\n**Issue**:\n\nYou receive an error message similar to the following: \n\n InvalidArgument: 400 Provided filter is not valid.\n\n**Possible cause**:\n\nYour filter isn't formatted properly.\n\n**Recommended solution**:\n\nUpdate the formatting of your filter so it's formatted correctly. For example,\nyou might be using the following to filter by display name. This filter isn't\nformatted correctly because it's missing quotation marks: \n\n from vertexai import agent_engines\n\n agent_engines.list(filter=f'display_name={DISPLAY_NAME}')\n\nIn this case, enclose `{DISPLAY_NAME}` in double-quotation marks: \n\n from vertexai import agent_engines\n\n agent_engines.list(filter=f'display_name=\"{DISPLAY_NAME}\"')"]]
