Hi Javier,
Uploading business costs and custom columns are currently not supported via
the AdWords API. If you wish to learn more about the possible fields you
can use for custom columns, I would recommend that you get in touch with
the product experts in the AdWords Community Forum
I've googled a bit and found nobody talking about this. The question is: Is
it possible to upload business costs via API for each conversion to
AdWords, creating a new custom column?
The purpose of this is to be able to make decisions just with AdWords, not
having to consult information over
