Error: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding - when adding an entry to the Ethnicity code table.

When adding an entry to the Ethnicity code table, users may receive the error:

Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
Could not create constraint. See previous errors.

This error message only appears when selecting a specific site from the Availability drop down menu. Users are able to add entries to the Ethnicity code table when 'All Sites' is selected from the Availability drop-down menu.

Download and install the latest version and patch, if applicable. 

Environment

 2.91.1535.92
 4.0.131

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