are nested fields currently supported in structured datasets?

What type of fields

basically struct columns

It think you can, and in the worst case do not. Declare it

sorry can you elaborate 🙂

Don’t have typed columns

tried the following

@dataclass_json
@dataclass
class LevelCodes:
    level1: str
    level2: str

AllocatedPNLOutputSchema = Annotated[
    StructuredDataset,
    kwtypes(
        date=dt.datetime,
        fsli=LevelCodes,
        ...

no currently just lists and dicts are supported, but i don’t think this is a hard thing to do.

sure can!