Solution : https://service.sap.com/sap/support/notes/159007 (SAP Service marketplace login required)
Key words :
symptom account balance/fpl9, additional key words saplfkl9, standard field cntpo, normal list, type decimal, customer fields, include ci_fkkepossum_all, fkkepossum_all, prerequisites, preconditions
Related Notes :
| 155214 | FPL9: Sum total is missing under normal list |