title: Processing multiple different files into one output message
body: <p>I have five different excel files  (different structure and different data)
  that will be processed into one output message (XML file).
  Files arrive into different order , all files are required to create output xml file.</p>
  
  <p>How can I do it in Biztalk ?</p>
  
  <p>more specific questions:</p>
  
  <p>1.Is that possible  to aggregate different type of messages in Biztalk and have message with multiple bodies ? </p>
  
  <p>2.Can I aggregate 5 excel files into one message and then execute output pipeline to process all of them ?</p>