You are correct and Euro comes with restrictions on creating currency for macroeconomic reasons. This was in the limelight during the 2008-2012 Greek debt crisi

You are correct and Euro comes with restrictions on creating currency for macroeconomic reasons. This was in the limelight during the 2008-2012 Greek debt crisis, and also came up around that time for other EU countries (Spain and Portugal at least). Additionally, Iceland, which does not use the Euro, had at one time pegged their króna to the Euro which caused issues in the 2008-2012 time period (though as I recall the main problem had to do with some other nation taking a major Icelandic bank into receivership post-2007 collapse).