The period trap: an EC covers a date range, not a property
Both portals make this structural rather than optional. Kaveri heads the field group PERIOD OF EC SEARCH and gives it exactly two fields, From Date and To Date. TNREGINET makes EC Start Date and EC End Date mandatory and refuses to search without them. Neither will issue a certificate about a property in the abstract, because no such certificate exists.
So the first thing to read on any EC handed to you is the date range on its face, and the question to ask about it is: why those dates. An EC that begins the year the seller bought the property tells you nothing about how the seller came to own it.
Karnataka's floor is explicit. The department's own help states that an EC from 1-4-2004 to the present can be obtained online, and that for the period before that, an application is made offline to the concerned Sub Registrar in Form No. 22. A modern online EC has therefore examined roughly two decades, and whatever happened before that has to be asked for separately.
