{"record":{"id":"72819c01bb38840f","repo":"BerriAI/litellm","slug":"parameter-k-is-not-supported-for-model-model-72819c","errorCode":null,"errorMessage":"Parameter {k} is not supported for model {model}. Supported parameters are {supported_params}. Set drop_params=True to drop unsupported parameters.","messagePattern":"Parameter (.+?) is not supported for model (.+?)\\. Supported parameters are (.+?)\\. Set drop_params=True to drop unsupported parameters\\.","errorType":"validation","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"litellm/llms/fal_ai/image_generation/stable_diffusion_transformation.py","lineNumber":120,"sourceCode":"                if k in supported_params:\n                    # Use mapped parameter name if exists\n                    mapped_key = param_mapping.get(k, k)\n                    mapped_value = non_default_params[k]\n\n                    # Transform specific parameters\n                    if k == \"response_format\":\n                        # Map OpenAI response formats to image formats\n                        if mapped_value in [\"b64_json\", \"url\"]:\n                            mapped_value = \"jpeg\"\n                    elif k == \"size\":\n                        # Map OpenAI size format to Stable Diffusion image_size\n                        mapped_value = self._map_image_size(mapped_value)\n\n                    optional_params[mapped_key] = mapped_value\n                elif drop_params:\n                    pass\n                else:\n                    raise ValueError(\n                        f\"Parameter {k} is not supported for model {model}. Supported parameters are {supported_params}. Set drop_params=True to drop unsupported parameters.\"\n                    )\n\n        return optional_params\n\n    def _map_image_size(self, size: str) -> Any:\n        \"\"\"\n        Map OpenAI size format to Stable Diffusion image_size format.\n\n        OpenAI format: \"1024x1024\", \"1792x1024\", etc.\n        Stable Diffusion format: Can be preset strings or {\"width\": int, \"height\": int}\n\n        Available presets:\n        - square_hd\n        - square\n        - portrait_4_3\n        - portrait_16_9\n        - landscape_4_3 (default)","sourceCodeStart":102,"sourceCodeEnd":138,"githubUrl":"https://github.com/BerriAI/litellm/blob/6c2dcb801bf2b75c18f1bb24140e7cf57465cc4d/litellm/llms/fal_ai/image_generation/stable_diffusion_transformation.py#L102-L138","documentation":"Error \"Parameter {k} is not supported for model {model}. Supported parameters are {supported_params}. Set drop_params=True to drop unsupported parameters.\" thrown in BerriAI/litellm.","triggerScenarios":"Thrown at litellm/llms/fal_ai/image_generation/stable_diffusion_transformation.py:120 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Remove the unsupported parameter or set drop_params=True."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"6c2dcb801bf2b75c18f1bb24140e7cf57465cc4d","analyzedAt":"2026-08-15T07:12:03.035Z","schemaVersion":2},"datasetVersion":"2026-08-15T17:31:12.345Z"}