// Data payload from the previous step

JSONArray valueJSONArray = input.get("AWSPayload");

def prettyBody = valueJSONArray.toString() as String;

def bytes = prettyBody.getBytes(); 

// Create a new Multipart MIME envelope

MimeBodyPart bodyPart = new MimeBodyPart()

// Data source envelope with input as bytes    

ByteArrayDataSource dataSource = new ByteArrayDataSource(bytes, 'application/json')

// Data handler envelope with the data source

DataHandler byteDataHandler = new DataHandler(dataSource)

bodyPart.setDataHandler(byteDataHandler)

// Set file name and type for the data

String fileName = input.AWSFileName        

bodyPart.setFileName(fileName)

String fileType = input.AWSFileType

bodyPart.setDisposition('form-data; name="file"')

bodyPart.setHeader("Content-Type", fileType)

MimeMultipart multipart = new MimeMultipart()

// Add body parts to the multipart

multipart.addBodyPart(bodyPart)

// Convert the multipart message to a byte array output stream

ByteArrayOutputStream outputStream = new ByteArrayOutputStream()

multipart.writeTo(outputStream)

message.setBody(outputStream)

// Set the boundary for the multipart message

String boundary = (new ContentType(multipart.contentType)).getParameter('boundary')

message.setHeader('Content-Type', "multipart/form-data; boundary=${boundary}")

// Set additional headers (using a helper method)

message = setHeader(message); 

return message;

<ScheduleResponse>

  <Status>OK</Status>

  <Messages/>

</ScheduleResponse>