Hi @Jungbum Shin ,
Welcome to Atlassian Community !
Go to you Project Workflow > Edit Workflow in Text Mode and you will be see transition id's for transitions.
Please refer below screenshot for your reference.
Learn how to use two new reports for next-gen projects in Jira Cloud: Cumulative flow diagram and Sprint burndown chart. Ivan Teong, Product Manager, Jira Software, demos the Cumulative ...
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