The following steps must be performed only when logged into The Raiser's Edge as Supervisor:

NOTE: must log into Raiser's Edge as Supervisor in order to see the Test Connection button
  1. Go to Config > General
  2. In the section for Blackbaud Payment Service Credentials, click the Test Connection button
  3. If the connection is not successful, please refer to Error: The Raiser's Edge is unable to connect to the Blackbaud Payment Service