Seaquel
SQL Server error code

SQL Server error 3047

SQL Server raises error 3047 at severity 16, which marks a problem with the query or data that you can correct.

The BackupDirectory registry key is not configured correctly. This key should specify the root path where disk backup files are stored when full path names are not provided. This path is also used to locate restart checkpoint files for RESTORE.
Msg3047
Severity16
Group3000–3999

Source: Database Engine events and errors