As of version 4.2 (https://jira.atlassian.com/browse/JRA-14076) JIRA honors user preferences whenever issue is edited. So if you want comma to be accepted - you need to use locale which accepts comma (like German or Polish) - either per user in his profile or globally for whole JIRA setting default locale (applied unless the user selected his own locale). If you want to use decimal dot, you would need to apply locale using dot - e.g. English. From the source code I don't see any option to support both at the same time for single user.
BTW: For banking industry that would be quite unsafe as "," and "." are both used and they do mean something different (thousands separator vs. decimal separator).
Hey Community mates! Claire here from the Software Product Marketing team. We all know software development changes rapidly, and it's often tough to keep up. But from our research, we've found the h...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs