Out of the box vTiger does not have a Graphical user interface to control the default sort order for listviews. Each business is different and everyone has their own needs. In order to change the default sorting order on Trouble Tickets listview – you will have to modify few files.
First, we need to set the default sorting field and order.
Second, we need to enable the default sort order.
Finally Sign Out of vTiger & Sign back in and the new sort order will be in effect.
Note, the same method will work for all modules including Contacts, Accounts/Organizations, Assets, Campaigns, Documents, Leads, Invoices, Quotes, Sales Orders, Purchase Orders, Potentials/Opportunities, Products, Services, Projects, Service Contracts and Vendors.