Hi,
Is it possible to add an option in ODK Central to download data without including system columns and notes?
This would be helpful to download the exact data columns.
It is possible to specific list of columns in OData API but the output of it is in JSON format. I am assuming you are looking for CSV download with the ability to specify a list of columns or only data columns (exclude system columns). That's not possible at the moment.
Can you please elaborate on your needs and processes.