Lots of people have had experience having their BeCMs cloned.
However you fail to give any background, symptoms and why you think a replacement BeCM is your only option. Also have no idea which continent you are on so can make a reco for a tech with the correct equipment to diagnose your BeCM and take the appropriate path for repair.
yes, TH is right.- how did you diagnose the BECM is locked?- if so , how did it occur ( see marty_nz for door locks)- is it H line or L, Diesel or Petrol and ...what exactly is the problem you are experiencingif it is really locked, I can unlock it. Have done many