For file transfer problems, first turn verbose and debug on.
Use the LS or DIR
command to verify the file name spelling.
Check how file names are entered:
some systems support both uppercase and lowercase file names. Some
systems support characters in file names that are not supported
on MPE/iX.
On MPE/iX, using MPUT,
resulting files are in uppercase letters (on non-MPE/iX system).
Use CASE command to force file names to lowercase.
Supported file types: must be binary or ASCII, fixed
or variable records.
Check the default file transfer type you are using.
Enter: