Dropped Event

A dropped event is one that was created but never reached the reports — lost in the network, rejected in validation, over quota, or deliberately not sent because the user did not consent.

A dropped event matters because it quietly skews the numbers: a number that is missing does not announce itself, so a team thinks behavior fell when in fact the data was lost. Causes sit at different layers and their remedies differ: network failure or an early page close is reduced by a beacon mechanism and an offline queue, validation rejection by fixing a name or property type, and over-quota drops by deliberate sampling instead of blind discarding. One class of dropped events is not a defect at all but policy: a bot event deliberately not counted, or an event from a user who did not consent. So 'dropped' should not always be read as a bug; the cause must be separated out.