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On the page Project settings > Automation > Rules click on the button Create rule
In the New Trigger panel select the Issue Transitioned trigger
After you have selected the right transition click on Save to proceed
Add any appropriate conditions and save.
Adding an actionClick
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New action button to add a new action
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Select the Create issue option in the panel that appears
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Configure the fields according to your preferences then click the dropdown button Choose fields to set…; in the dropdown menu check the field Checklist Text. Fill the Checklist Text
textarea with a code similar to the one shown in the following picture.
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