### Update the Application Modules DataSourceSignature

To update the Application Modules DataSourceSignature:

1. In SQL Management Studio, go to the `ApplicationModules.DataSourceBus.DataSource` table.
2. Right-click the table and select top 1000 rows.
3. Highlight the Signature, right-click and then select Copy.

1. In a text editor open `…\Schneider Electric\Power Monitoring Expert\Applications\bin\DataServicesHost.config` and then update the `DataSourceSignature` value to match the one you copied in the image above.

Note: Once the upgrade is complete, it is recommended that you make a backup of the upgraded databases. Should your database become corrupted at a later time, this backup of the upgraded databases will help you to complete the upgrade successfully. A suggested location for these backups is `…\Schneider Electric\Power Monitoring Expert\config\cfg\DBBackups`.