Q: Can I remove the portal's default error message and only show the message I have configured in the validator?

Ans: It is unable to alter or remove the generic error messages. These messages are generated directly by the API during ticket creation, and unable to control them at this moment.

Q: How many Expressions for Jira validators can I add to a workflow transition?

Ans: Three. We can add only three Forge validators to a transition due to underlying product limitations.

https://jira.atlassian.com/browse/JRACLOUD-82454