Solution : https://service.sap.com/sap/support/notes/204210 (SAP Service marketplace login required)
Key words : 
additional key words rffmtrns, funds management active, running rffmtrns, carry-forward, fi 334 error, document change, purchase orders, upgrade process, rffmtrnsfix program, rffmtrnsfix
Related Notes : 
       
| 450464 | RFFMTRNFIX aborts due to double insert | 
| 318672 | RFFMTRNSFIX: Improve performance | 
| 308860 | |
| 201539 | RFFMTRNS: Delivery items only set for purchase ords | 
| 101778 | Conversion of FM data structures as of Version 4.5A |