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3 changes: 3 additions & 0 deletions src/connections/reverse-etl/index.md
Original file line number Diff line number Diff line change
Expand Up @@ -312,6 +312,9 @@ Column JSON size | The maximum size of any single column value. | 128 KiB
#### Why do my sync results show *No records extracted* when I select *Updated records* after I enable the mapping?
It's expected that when you select **Updated records** the records do not change after the first sync. During the first sync, the reverse ETL system calculates a snapshot of all the results and creates records in the `_segment_reverse_etl` schema. All the records are considered as *Added records* instead of *Updated records* at this time. The records can only meet the *Updated records* condition when the underlying values change after the first sync completes.

#### Does Segment use Transport Layer Security (TLS) for the connection between Snowflake and Segment?
Segment uses the [gosnowflake library](https://pkg.go.dev/github.com/snowflakedb/gosnowflake#pkg-variables){:target="_blank"} to connect with Snowflake, which internally uses TLS for the HTTP transport.

#### Can I be notified when Reverse ETL syncs fail?
Yes, you can sign up for Reverse ETL sync notifications.

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