A "Transfer failed: ***" error appears at the start of a file transfer when running Buffered Field IND$FILE transfer in a Reflection Desktop Host session.  Structured Field IND$FILE works correctly in Reflection Desktop.  The error dialog pops up when the Reflection Desktop Session attempts a Buffered Field IND$File transfer and the host sends a screen which contains "***".

Full article: https://portal.microfocus.com/s/article/KM000011144