Solution : https://service.sap.com/sap/support/notes/179470 (SAP Service marketplace login required)
Key words :
system generates error message e9890 'internal error, reading internal table x_prei, additional key words proration, target step remained untouched, dependent schema steps, dependent scheme steps, price class-specific, unnecessary proration, target step, rental price
Related Notes :
| 189165 | Improvements proration III |
| 180193 | Proration with dependent schema steps II |
| 177548 | Collective note f. IS-U/CCS 4.51 - add-on patch 002 |
| 177543 | Collective note for IS-U/CCS 1.2 - add-on patch 013 |
| 169580 | Termination in variant SETTLE01 with error E9890 |
| 164336 | Terminations in rental price variants |