Tanushree Maiti
Tera Patron

Hi @PraveenaD 

 

Refer:

How do I get case number from record in ATF? 

 

Also check

https://www.servicenow.com/content/dam/servicenow-assets/public/en-us/doc-type/success/quick-answer/...

 

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