don't show repetitive validation errors
Ticket
+status
+priority
don't show repetitive validation errors+tags
+commit
+issues
we often show multiple errors for a single submission when it makes more sense to show only the most important one.
Like you'll sign up with no email and you'll get (1) email required and (2) must be valid email... or something like that. same with password. must have password, must be so many characters...
Related: don't show confirmation required unless you're also going to allow the confirmation!