Since I got recently a few times to this case, where I had to do something with classification data in SAP ECC, I had to wrote down some of the important tables and transactions.
Tables
| Technical name | Description | Important fields |
| CABN CABNT (Text) | Characteristics names (Merkmalenamen) | ATNAM (CABN) ATBEZ (CABN) |
| CAWN CAWNT (Text) | Characteristcs values (Merkmalwerte) – ATWRT | ATWRT (CAWN) |
| KLAH | Class headers |
Transactions
| T-Code | Description |
| CL02 | Class extension (Klassenverwaltung) |
| CT04 | Characteristics names (Merkmalverwaltung) |


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