io.debezium.config.CommonConnectorConfig#SKIPPED_OPERATIONS states that `i` would be the correct value for INSERT events, but that's not correct. It should be io.debezium.data.Envelope.Operation#CREATE which is a `c`.
The docs for message.key.columns state the default value would be an empty string. this is not correct. null/unset is the default and thus should be replaced with: n/a