Unable to Link Cases - Case Management

Summary:

Hi All,

We are facing an issue in Case management where we are trying to create a relationship with Case object. When are trying to link current case to other cases we are not getting any cases in LOVs. Please see below :-

Can you please assist if there is any option to enable this functionality.

Thanks for your assistance.

Vishal Dhane

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable): 26C

Code Snippet (add any code snippets that support your topic, if applicable):