The fields that are failing are enums. So the error message shows the returned value from the model and the list of acceptable values for that field.
E.g.
...
line 204, in structured_predict
return program(**prompt_args)
File "/Users/[username]/.pyenv/versions/3.9.15/lib/python3.9/site-packages/llama_index/program/openai_program.py", line 185, in __call__
return _parse_tool_calls(
File "/Users/[username]/.pyenv/versions/3.9.15/lib/python3.9/site-packages/llama_index/program/openai_program.py", line 63, in _parse_tool_calls
output = output_cls.parse_raw(function_call.arguments)
File "/Users/[username]/.pyenv/versions/3.9.15/lib/python3.9/site-packages/typing_extensions.py", line 2499, in wrapper
return arg(*args, **kwargs)
File "/Users/[username]/.pyenv/versions/3.9.15/lib/python3.9/site-packages/pydantic/main.py", line 986, in parse_raw
return cls.model_validate(obj)
File "/Users/[username]/.pyenv/versions/3.9.15/lib/python3.9/site-packages/pydantic/main.py", line 480, in model_validate
return cls.__pydantic_validator__.validate_python(
pydantic_core._pydantic_core.ValidationError: 1 validation error for CrashReport
manner_of_collision
Input should be 'Rear End','Not a Collision with Motor Vehicle','Angle (Other)','Sideswipe-Same Direction','Left Angle Crash','Head On','Sideswipe-Opposite Direction','Right Angle Crash' or '(None)' [type=enum, input_value='Guard Rail Face', input_type=str]