Solution : https://service.sap.com/sap/support/notes/300203 (SAP Service marketplace login required)
Key words : 
-------------> central conversion                     -----------------> start conversion                         ___________________________________________________________ memory consumption, euro                     ----------> local currency changeover                     -------------> central changeover                     ---------------> central changeover, cross-application components                     -------------> european monetary union, cross-application components                     -----> european monetary union, cross-application components                     -----------> european monetary union, cross-application components                     -------> european monetary union, close dunning run            preparation steps related, euro                     -------> local currency changeover                     ---------> preparation                     -----------> preparation, euro                     ------------> local currency changeover                     -------------> central changeover                     --------------->, procedure monitor 'monitor runtime forecast'
Related Notes : 
       
| 311473 | |
| 208019 | Changeover to the EURO in FI-CA |