Solution : https://service.sap.com/sap/support/notes/620417 (SAP Service marketplace login required)
Key words :
cost center/activity type combination, affected activity type, attached program corrections, master record table, activity type, master record, activity unit, 50 activity types, program error, table csla
Related Notes :
| 940407 | KP 26: Message KI 501 with same activity type |
| 644364 | KP06ff.: Message KI501 with same activity type |
| 643483 | KP26: KI501 for the same activity type |