IBM 3270 Manual page 212

INDFT015 Required host storage
unavailable: File transfer
canceled
INDFT
Explanation: You need 30K of main storage for
file transfer, in addition to that required by your
host. This should not be confused with disk
space.
User Response: Contact your local host system
support representative.
INDFT016 Incorrect request code: File
transfer canceled
Explanation: An invalid parameter has been
sent by the Send or Receive application.
User Response: Verify that the current versions
of Send, Receive, and IND$FILE MODULE are
correctly installed. If they are, follow local
procedures and have available:
1. The sequence of events, including keys
pressed and in what order
2. A system level
3. Message number.
INDFT017 Missing or incorrect TSO data
set name: File transfer canceled
Explanation: The TSO data set name is missing
or not a sequential or partitioned data set.
User Response: Correct the TSO data set name
in the command and retry.
Appendix A. Messages A-27