Solution : https://service.sap.com/sap/support/notes/107456 (SAP Service marketplace login required)
Key words :
symptom manually specialized class items, additional key words class item, attached advance corrections, class node, bom explosion, order boms, program error, characteristic, assignment, specialization
Related Notes :
| 129158 | @3Z@ SET with manual changes - Collective note |
| 111070 | 3.1I+ Sales order items are not unique |