A Zendesk app that shows a list of tickets that have the same Custom Field(s) value(s) as the current ticket being viewed. Custom Field(s) to be used are configuration parameters of the app.
Get custom_field id you want to use as reference from Settings -> Ticket Fields and introduce it at app configuration form. You can also use the word 'requester' as 'id' if you want to get tickets submitted by the same person.