Hi Simon,

You may have already discovered this, but the server is expecting there to be a "runDataUploadedFile" property in the runProperties.tsv file after the transform script. Presumably it's not present because your Python script is supplying the data rows as part of the API request instead of as a reference to a data file on disk. This is not a commonly used combination (API-based insertion and transform script), so there may be a gap or two like this, but hopefully you can find an approach that works.

Thanks,
Josh