Hi Antonio,
Do you mean SEP Small Busines Edition or the beta of the new SEP 12.1? The currently-available CleanWipe will remove SEP SBE 12, but do rememeber that CleanWipe is intended to be a "last resort." "Thumbs up" for the article that Rchawla recommeneded, above.
If it is SEP 12.1: you may find some additional assistance with SEP 12.1 here: https://www-secure.symantec.com/connect/SEP_12_Beta_Group I douby that there will be a CleanWipe for SEP 12.1 until its official release this summer, though.
Hope this helps!
Thanks and best regards,
Mick