RoboCopy Exit Codes

During my work at Capito ,i came to a client were wanted a Build-Deploy-Test using Lab build.
the build part worked well but we had a small problem with the deployment scripts.
we were using RoboCopy in the deployment scripts. apparently the return code are very different:

The return code from Robocopy is a bit map, defined as follows:

Hex	Decimal	Meaning if set
0×10	16	Serious error. Robocopy did not copy any files. Either a usage error or an error due to insufficient access privileges on the source or destination directories.
0×08	8	Some files or directories could not be copied (copy errors occurred and the retry limit was exceeded). Check these errors further.
0×04	4	Some Mismatched files or directories were detected. Examine the output log. Some housekeeping may be needed.
0×02	2	Some Extra files or directories were detected. Examine the output log for details.
0×01	1	One or more files were copied successfully (that is, new files have arrived).
0×00	0	No errors occurred, and no copying was done. The source and destination directory trees are completely synchronized.

You can use this in a batch file to report anomalies, as follows:

    if errorlevel 16 echo ***FATAL ERROR*** & goto end
    if errorlevel 15 echo OKCOPY + FAIL + MISMATCHES + XTRA & goto end
    if errorlevel 14 echo FAIL + MISMATCHES + XTRA & goto end
    if errorlevel 13 echo OKCOPY + FAIL + MISMATCHES & goto end
    if errorlevel 12 echo FAIL + MISMATCHES& goto end
    if errorlevel 11 echo OKCOPY + FAIL + XTRA & goto end
    if errorlevel 10 echo FAIL + XTRA & goto end
    if errorlevel 9 echo OKCOPY + FAIL & goto end
    if errorlevel 8 echo FAIL & goto end
    if errorlevel 7 echo OKCOPY + MISMATCHES + XTRA & goto end
    if errorlevel 6 echo MISMATCHES + XTRA & goto end
    if errorlevel 5 echo OKCOPY + MISMATCHES & goto end
    if errorlevel 4 echo MISMATCHES & goto end
    if errorlevel 3 echo OKCOPY + XTRA & goto end
    if errorlevel 2 echo XTRA & goto end
    if errorlevel 1 echo OKCOPY & goto end
    if errorlevel 0 echo No Change & goto end

i found this at http://ss64.com/nt/robocopy-exit.html