Hi Nikita,
As this is a 'Z' table, this means that this was created by a developer and not provided by SAP. Since this might be a part of custom requirement, we can not comment on the table. But yes, if that is being used in multiple programs(doing some comparisons) indicates that this could be one of the configuration data tables that is generally carrying 'hard coded' data which we try to avoid writing in code.
For any further details you can check the ATTRIBUTES, DOCUMENTATION of the table or programs and also you can find the SAP-IDs of the programmers and contact them.
Hope this helps you in some way.
Regards,
Deepak.