View Case Record> Error: That Search or Mass Update does not Exist (internal id=x)

Scenario

A User encounters an error upon trying to view a Case Record:

• Error: That Search or Mass Update does not Exist (internal id=x)

 

Solution

This error message is likely due to the related Saved Search which the Case record is connected to. The Saved Search in question may be set to private, hence, a user with a Custom role is not allowed to view it. 
Use the following steps to resolve:

1. Navigate to Lists > Search > Saved Searches
2. From the list, locate the Saved Search with the Internal ID indicated from the Error
3. Edit the Search
4. Mark Public check box on the main line of the page 
5. Click Save

The User should now be able to access the record.