Assignment rule

Summary: Hello Guys,

I am facing one issue while creating the Assignment rule in health and safety module.

While creating the rule, I am unable to see object Name. By default 4 objects, like safety incident details, Event, Investigation and Action are provided to create and allocate the incident to respective users.

When I am creating the rule, no values is appearing in the object name. What could be the possible cause for this error, your suggestion and recommendation is valuable. Please suggest.

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