Solution : https://service.sap.com/sap/support/notes/184729 (SAP Service marketplace login required)
Key words :
internal error message aj392 'internal, additional key words price summary, symptom billing terminates, clearing rounding errors', price summary, backbilling, prerequisites
Related Notes :
| 184489 | Collective note f. IS-U/CCS 4.51 - add-on patch 005 |