## Installation Logbook

The results of operations with the ENC collection: installation and/or removal of certificates, ENC licenses, and ENCs are recorded in the **Installation Logbook**.

### Viewing the Log

| Menu path |
|-------------|
| {{ menu }} → {{ data_set }} → Installation Logbook |

The displayed window shows information about operations grouped by date.

![Installation log window](images/ENC_Coll_8.png)

| No. | Element | Description |
|---|---------|----------|
| 1 | Export | Export the selected range of entries |
| 1 | Date/Time UTC | Time of the performed operation in UTC |
| 2 | Update installation entry | Information about installing updates to the set |
| 3 | Cell set installation entry | Information about installing an ENC set |
| 4 | Back | Return to the **Chart Collection** |
| 5 | Calendar | Select the date range for viewing |
| 6 | Successful root certificate deletion entry | Confirmation of successful SA certificate deletion |
| 7 | Successful root certificate installation entry | Information about successful SA certificate installation |
| 8 | Successful ENC set deletion entry | Information about ENC set deletion |

```{note}
If errors occur during the installation of certificates, cell permits, ENCs, or updates, an SSE error code will be indicated. Description of {doc}`SSE errors </sections/enc-collection-management/sse-messages/index>`.
```

ECDIS provides a {doc}`manual correction </sections/instruments/manual-correction/index>` function.
