Such applications will require extensive modification. Applications that were designed to work with a national currency with no decimals will need to expand the currency field to work with decimals since the euro currency includes cents. There are 100 cents to the euro. Such countries include Spain, Belgium and Italy. Some applications may require a major redesign to comply with this requirement.
Many applications use some sort of threshold value to define various actions.
Such thresholds will have to be identified and changed. Other common thresholds used in applications include authorization levels, data validity checking, and exception report generation. It may not be possible to change all applications over to the euro at the same time. This means that applications will have to communicate with applications that are not euro-compliant. Many enterprises have links to systems belonging to other enterprises.