‘Claims made’ is a term used to describe an insurance policy that covers claims which are notified during the policy term. This may not necessarily be the same period in which the accused incident or error resulting in the claim occurred.
Professional indemnity policies provide a 'claims made' basis of cover because advice or service errors in many professions are often discovered weeks, months or even years after the mistake was made.
It’s also important to note that, if the limit of indemnity was changed, it is the limit purchased when the claim is notified that applies, not the limit purchased when the work was completed.