didnt understand your issue correctly, i can see the VC model you described is combination of class node as well as super BOM.
whats item B in below table? does item B have two classes assigned of type 200 as well as 300 ?
| Material | Class | Type |
|---|---|---|
| A | APPEARENCE | 300 |
B | INHERIT | 200 |
| B | CUSTOMIZE | 300 |
what are the characterstic in side this claases?
It seems Material A is FERT and it have class node INHERIT as component in BOM with catagory K.
If my understanding is correct till this point, i didnt understand why you need 2 class type attached to B , if you want to replace class node INHERIT by material B?
please check and reply , also go through Document i created on Class nodes in BOM, may be it will help you explain what VC model i know by useing class nodes.
Classes as place holders [Components in Super BOM]
Thanks
Ritesh