Hello @何梦
Are you working with a Team Managed project or a Company Managed project? That information will show at the bottom of the panel on the left.
For a Company Managed project you would add a Field Required Validator to the workflow transition. Refer to
https://support.atlassian.com/jira-cloud-administration/docs/configure-advanced-issue-workflows/
For a Team Managed project you would add a Rule to the workflow transition. Refer to:
In either case not all fields may be supported by the rule.
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