Solution : https://service.sap.com/sap/support/notes/816776 (SAP Service marketplace login required)
Key words : 
terms rule fi12 solution rule fi12, 0 001  =0     divid anr addwt 001  >0     addwt, wage type reoccurs, time unit 001, divide amount
Related Notes : 
       
| 821434 | VAKEY parameters deleted |