[This is preliminary documentation and subject to change.]
| Common-Name=Required-Categories | Admin-Display-Name=Required-Categories |
| Admin-Description=Required-Categories | Object-Class=Attribute-Schema |
| Attribute-ID=1.2.840.113556.1.4.321 | OM-Syntax=4 |
| Attribute-Syntax=String(Octet) | LDAP-Display-Name=requiredCategories |
| Multi-valued | System-Only=FALSE |
| Range 16 to 16 | |
| Schema-ID-GUID={7d6c0e93-7e20-11d0-afd6-00c04fd930c9} | Comment=Class store |