Solution : https://service.sap.com/sap/support/notes/157080 (SAP Service marketplace login required)
Key words :
account assignment object &2 belongs, system generates message ki100, generate error message ki100, account assignment object, prerequisites message ki100, trip data entry, additional key words, 5b/hot package 01, 0b/hot package 15, error message
Related Notes :
140503 | KI100 as an E message, although W message acc.to OBA5 |