{"record":{"id":"37f5fd89e6a8c463","repo":"tensorflow/models","slug":"the-multi-level-feature-model-is-not-supporte","errorCode":null,"errorMessage":"The multi-level feature model `{}` is not supported.","messagePattern":"The multi-level feature model `(.+?)` is not supported\\.","errorType":"exception","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"official/legacy/detection/modeling/architecture/factory.py:72","lineNumber":72,"sourceCode":"  else:\n    raise ValueError('The multi-level feature model `{}` is not supported.'\n                     .format(params.architecture.multilevel_features))\n  return fpn_fn","sourceCodeStart":null,"sourceCodeEnd":null,"githubUrl":"https://github.com/tensorflow/models/blob/e006f5f0d534913e49c1f1dae87364039fa607e2/official/legaacy/detection/modeling/architecture/factory.py#L72","documentation":"Dispatch guard in multilevel_features_generator: params.architecture.multilevel_features (filled into {}) is not a supported FPN style (e.g. 'fpn'), so no multi-level feature extractor function could be returned. The input at fault is the multilevel_features field of the architecture params.","triggerScenarios":"Thrown at official/legaacy/detection/modeling/architecture/factory.py:72 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Set architecture.multilevel_features to a supported value such as 'fpn'","Verify the architecture section of the config for typos"],"exampleFix":null,"handlingStrategy":"validation","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"e006f5f0d534913e49c1f1dae87364039fa607e2","analyzedAt":"2026-08-24T14:09:15.576Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}