Using cURL, I am able to get the authorization code.  However when then using cURL to try to exchange for an access token, I get an error: Client authentication (if the client has credentials) or the client_id parameter is required for an authorization request using the code grant type.  Not sure what I am doing wrong.  Any suggestions? ... View more

I have created a campaign via the online GUI that has scheduled emails over a period of days.  I want to be able to use it as a template I can copy, add an email address and schedule.  The only info I found in the community on this is 5 years old, so maybe there is a feature now in the API.  That is, can I do a GET on a campaign, change the name only and then do a POST with the response data from the GET where only the name is changed?  Then do a PUT on the new campaign created for the email to use and a POST to schedule it? ... View more