Solution : https://service.sap.com/sap/support/notes/166496 (SAP Service marketplace login required)
Key words : 
data element type length short textammrhy      ammrhy      numc  3     number, additional key words interest calculation method, interest calculation method act/actp, periodammrhysav  ammrhy      numc   3     number, existing data element ammrhy, periodattrhy      attrhy      numc  3     number, prerequisites individual condition items, reference interest rate, data element, attached correction instructions
Related Notes : 
       
| 434961 | Incorrect period start with interest reference | 
| 109587 | Interest calculation method act/act |