Solution : https://service.sap.com/sap/support/notes/658249 (SAP Service marketplace login required)
Key words : 
correct double fm open items, period based encumbrance tracking, program error solution implement, receive error message fi_e200, receive error message fi_e201, attached coding corrections, transaction code se91, short text enter, correction report provided, field fmioi-stunr
Related Notes : 
       
| 820360 | |
| 729063 | Double trip commitment in FM | 
| 716898 | Unexpected update of sales order in FM | 
| 652738 | |
| 645021 | Field FMIOI-RFSYS has incorrect values |