Solution : https://service.sap.com/sap/support/notes/1157604 (SAP Service marketplace login required)
Key words :
sapbwnews bw support package 23 netweaver 04 stack 23, sap bw releases 3, terms customer exit, additional support packages, customer exit variable, correct system behavior, 50 import support package 23, import support package 18, specific error situation, attached correction instructions
Related Notes :
1146357 | SAPBWNews BW SP23 NW'04 Stack 23 RIN |
1136882 | SAPBINews NW7.0 BI Support Package 18 |
1125108 | You are using the obsolete 3.x authorizations in BW 7.0 |