Hi @ServiceNow Use6 

 

Check if  OOB component has been customized in your instance for INC auto-closure. 

 

For  auto-closure OOB component details:

Refer:https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB0552820

 

I will recommend you to log a case  to ServiceNow, if it is OOB and take ServiceNow support help . 

 

 

Please Accept the solution if it assisted you with your question & Mark this response as Helpful.
Regards
Tanushree Maiti
ServiceNow Technical Architect
LinkedIn: https://www.linkedin.com/in/tanushreemaiti