There are actually two issues that provide a terrible user experience. One is that the error message shown in MyIT is ugly and screams at the user. The second is that the user's input is validated in real time, rather than waiting until the user thinks the input is complete.
Based on the discussion in this communities post:this idea asks that BMC Digital Workplace modify the validation routine to check after the user leaves the field, rather than test each input during entry.
A second idea could be for those who use BMC Digital Workplace Catalog to be able to customize the error message text as well.
Both ideas could be supported at the same time.