MB1B stock mvt in Hu material

Hi,

Could you please help me on this issue:

At our cutomer some users use tcode MB1B for stock transfer  mvt 322 instead of VLMOVE because of Hu material.

MB1B in case of Hu material causes some errors then ou customer asked me to add  a check with Error message in

tcode MB1B in order to block stock transfer with MB1B in case of Hu material.

Can i do that via customizing  ?  if not witch better exit or badi where the check must be done ?

Why standard doesn't check this case ?

Any input will be appreciated.

Thank you in advance.

Toubkal.