{"record":{"id":"d72d8d887d90b25a","repo":"tensorflow/models","slug":"quantization-type-quant-type-is-not-supported","errorCode":null,"errorMessage":"quantization type {quant_type} is not supported.","messagePattern":"quantization type (.+?) is not supported\\.","errorType":"exception","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"official/vision/serving/export_tflite_lib.py","lineNumber":184,"sourceCode":"        debugger.run()\n        return debugger.get_nondebug_quantized_model()\n\n    elif quant_type == 'uint8':\n      converter.optimizations = [tf.lite.Optimize.DEFAULT]\n      converter.default_ranges_stats = (-10, 10)\n      converter.inference_type = tf.uint8\n      converter.quantized_input_stats = {'input_placeholder': (0., 1.)}\n    elif quant_type == 'fp16':\n      converter.optimizations = [tf.lite.Optimize.DEFAULT]\n      converter.target_spec.supported_types = [tf.float16]\n    elif quant_type in ('default', 'qat_fp32_io'):\n      converter.optimizations = [tf.lite.Optimize.DEFAULT]\n    elif quant_type == 'qat':\n      converter.optimizations = [tf.lite.Optimize.DEFAULT]\n      converter.inference_input_type = tf.uint8  # or tf.int8\n      converter.inference_output_type = tf.uint8  # or tf.int8\n    else:\n      raise ValueError(f'quantization type {quant_type} is not supported.')\n\n  return converter.convert()\n","sourceCodeStart":166,"sourceCodeEnd":187,"githubUrl":"https://github.com/tensorflow/models/blob/e006f5f0d534913e49c1f1dae87364039fa607e2/official/vision/serving/export_tflite_lib.py#L166-L187","documentation":"Error \"quantization type {quant_type} is not supported.\" thrown in tensorflow/models.","triggerScenarios":"Thrown at official/vision/serving/export_tflite_lib.py:184 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Use a supported quantization type such as 'fp16', 'int8', or none.","Check the quant_type value in the export config for typos."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"e006f5f0d534913e49c1f1dae87364039fa607e2","analyzedAt":"2026-08-24T14:09:15.576Z","schemaVersion":2},"datasetVersion":"2026-08-24T17:17:21.512Z"}