Where can I find the Windows Task Scheduler exit codes list?

Question

All I have found about the Windows Task Scheduler results are short details about just a few codes.
Does anybody knows about a complete list?
For example, I have not been able to locate anything about the error code 0xFF.

EDIT:For example, if I add this task (for testing a command line program called "Notifu"):

schtasks /create /tn "NotifuTest" /tr "d:\Temporal\Notifu\notifu64.exe /m 'Test'" /sc minute /mo 1 /sd 10/10/2010 /ru "SYSTEM"

The same command has been verified working by command-line.
This is the result (sorry, my Windows is in spanish); note the 0xFF (the program seems to be executing, but with no results:

Answer 1

You can find a list here: http://msdn.microsoft.com/en-gb/library/windows/desktop/aa383604(v=vs.85).aspx

However it is not complete as I have encountered this result for exemple: 0x7FFBD3FA