Solution : https://service.sap.com/sap/support/notes/486781 (SAP Service marketplace login required)
Key words :
application area msgno allowed standard switch offks 096 iwe, add application area 'ks', system issues warning message ks096, make message ks096 changeable, add message class 'ks', information message / error message, change message ks096, possibly user-dependent, master data maintenance, call transaction se11
Related Notes :
922163 | KS02: KS 096 was set as error message |
847788 | |
757143 | OKEON: Error message KS 096 is set as an error |