BDC for MM01 with Classification View

I need to create materials using mm01 with classification view. since there is no bapi supporting this view, i am ding by bdc.

The problem is in classification view once i give the class type and name a screen pops with caption

characteristic value assignment, but theere are no charateristics displayed - wat values do i have to enter here >

once i leave this screen the characteristics show up one after the other and i can load the details. but then while tryin to save error comes staing incnsisitent value assigned. wat do i ener in the intermediate screen t avoid this error.

thanks