Sorry but I do not know ESP. Perhaps it is possible to send codes via a batch
specifying certain options. But this you have to figure out yourself.
The backup.cmd could look like this

pushd c:\tsm\baclient                                     (or the directory
where you installed TSM)
dsmc i .....
goto sub%errorlevel%
goto endend

:sub0
rem the backup is good, send a positive feedback to ESP
goto endend

:sub1
rem send a negative response to ESP that the password was not correct
goto endend

:sub4
rem negative feedback, directory path or file not backed up
goto endend

:endend
popd

The pushd and popd commands have the same effect as cd but they keep in mind the
directory where they are start and permits you to go back with the popd.


Hope this helps, otherwise let me know

Michel