Solution : https://service.sap.com/sap/support/notes/186161 (SAP Service marketplace login required)
Key words :
billing planfpla importing fpla billing planfplt importing fplt datech_tndat changing tbdat dates, parameter type reference type descriptionxfpla importing v60f_fpla_tab billing plansxfplt importing v60f_fplt_tab dates, additional key words billing plan, create type group v60f, enter type group v60f, periodic billing plan starts, required type definitions, type group, enter method date_to_determination, date 'dates
Related Notes :
| 186226 | Additional settlement period in the billing plan |