Hi Paul,
So I can further investigate the issue, could you provide the following information via Reply to author privately?
Hi Paul,
I'm sorry for the late response and thank you for providing your CID, script name and spreadsheet.
Upon checking the documentation that you are referring to, it seems that it is out of date. In the meanwhile, the best way to determine the right set of columns and values to use is to actually download an equivalent report from the UI. The column names provided there should match the allowed column names for bulk upload. You can change the content of the sheet to match the upload changes you want to make. If you don't have any campaigns in your account, I would suggest to create one in the Google Ads UI first so that you can download the report from UI.
I'm sorry for the inconvenience, I will file a feature request to update the said documentation.
Please let me know how it goes after trying the suggestion.
Regards,
Hiroyuki
Google Ads Scripts Team