Solution : https://service.sap.com/sap/support/notes/136966 (SAP Service marketplace login required)
Key words : 
reconcile inconsistent budget values, additional key words bp004, field overflow - input, reconciliation program rbpewu1p, error bp004, program terminates, program termination, program error, euro conversion, transaction cjw1
Related Notes : 
       
| 185063 | CJ30: Rounding differences after euro changeover | 
| 138546 | CJW1:Incorr.budget vals after budgt recnc.f.projcts |