Solution : https://service.sap.com/sap/support/notes/988305 (SAP Service marketplace login required)
Key words : 
terms cash flow, attached program corrections, program error, annuity repayment, settled periodically, monthly amounts, settled annually, settlement date, annuity loan, saplff10 reason
Related Notes : 
       
| 1240000 | Annuity loan: Incorrect repayment amounts | 
| 968245 | Annuity loan: Missing interest capitalization | 
| 964555 | Annuity loan: Incorrect repayment amount in first period |