When are data Verificator methods fired?

Please can you tell me when the Verificator methods attached to the dataprocessor are fired? I know the Validation methods attached to a column are fired either Live or immediately after editing is finished. However there does not seem to be any clear documentation about WHEN the Verificator methods are fired?

Thanks in advance

They are called before sending the data. So exact timing depends on the way how DataProcessor initialized.

In auto update mode it will be after each edit cell operation ( when editor closed )
In manual sending mode - it will be after dp.sendData() call