Thanks for reaching out to Atlassian Community!
For us to help you with this case, we need more details about the conditions that the ticket would be auto-closed.
By default, the template for IT Service Desk has this SLA setting and this Automation, both work together to auto close issues:
If you need help with the JQL we need details about what type of tickets you need to auto-close.
I have multiple projects that use variations of the same base workflow. The variations depend on the requirements of the project or issue type. The variations mostly come in the form of new statuses ...
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