Initially these features were provided by JSU but now on Jira Cloud they are maintained by Atlassian. The following workflow validators are available:
- Date Compare Validator
- Fields Required Validator
- Regular Expression Check Validator
- Date Window Validator
- Parent Status Validator
For information on workflow validators in Jira, see the Jira Documentation.
Our JSU on Jira Server/Data Center documentation about Workflow Validators will you also give some hints, how to configure them on Jira Cloud.