About MattK9938

We use Constant Contact to manage email campaigns and want to take advantage of your RESTful API to do some integration with our custom CRM.       In looking through your API docs I have determined that the OAuth2.0 Server Flow is the right one for our purposes since it doesn’t require interaction by users.   I followed the steps outlined on the website(https://v3.developer.constantcontact.com/api_guide/server_flow.html).   I am stuck on Step 4: Exchange the Authorization Code for an Access Token and a Refresh Token.     I have built the POST request using JSON format in the body of the post.  Following are the specifics:     URL: https://idfed.constantcontact.com/as/token.oauth2   Headers:   "content-type: application/json" "accept: application/json" "authorization: Basic {authcode}"  , where {authcode} is the Base64 encoded version of our API Key and Secret gleaned from our My Applications page   Body: { "code" : "{code}", "redirect_uri" : "https://www.oursite.com", "grant_type" : "authorization_code", }   where {code} is the code returned in the URL in Step 3   When I send the POST request I get the following error:   {"error_description":"grant_type is required","error":"invalid_request"}   As you can see in the Body above, “grant_type” is clearly being sent.      Thoughts? ... View more