Nearly identical to starting a simple transfer in the Console interface, but with fewer options to overriding the settings. It is important to note that if a transfer does not allow the user to select the source items at start, then including a "source" section will result in an error being returned when using this call.
An Example URL
An Example Body Request
If Success, an array of IDs of the new transfer(s) is returned. If it is a multi-step Smart Transfer then multiple transfers will be created.