Solution : https://service.sap.com/sap/support/notes/140395 (SAP Service marketplace login required)
Key words : 
additional key words emu, local currency changeover, latest support package, newer informix version, informix database, cluster process, data records, restart capability, database organization, euro conversion 3
Related Notes : 
       
| 183158 | LC changeover to euro: Cluster functions | 
| 162016 | Local currency changeover: error in sum-up | 
| 157300 | Informix Dynamic Server versions 7.30.[UTF]C5 | 
| 155183 | Euro changeover: Tables ANLV, ANLW not converted | 
| 153155 | Informix Dynamic server versions 7.30.[UT]C7X9 | 
| 141218 | |
| 121626 | Euro LC changeover:important Support Packages info. | 
| 121245 | System settings for local currency changeover to euro |