Is it possible thru the soap API (w/o needing anything else) to clear the value from a field, custom or otherwise?
I've tried just passing thru a blank value and that doesn't seem to do anything. Changing the value to something else does work, I just don't see a way to clear it out.
That sounds like something you can't do thru the API. Is there no way to do it via the syncLead (or any other) call in the SOAP API?
Edit: I guess I could setup a smart campaign that could clear out fields and call that via the API requestCampaign, but to rely on something that has to be done in the UI first rather than just natively in the API seems somewhat hack-ish.