What is a Data Corruption error?

Vtiger CRM throws this error when import is interrupted because of reasons such as crashing or cancellation by a user. 

The error indicates that the import table still has pending records but information related to the import process, such as  field mapping, default values, and duplicate checks, is lost. 

These records will not be imported further. The user needs to clear the import data before starting another import.

To know more about Import, Click Here.