Seaquel
SQL Server error code

SQL Server error 3023

SQL Server raises error 3023 at severity 16, which marks a problem with the query or data that you can correct.

Backup, file manipulation operations (such as ALTER DATABASE ADD FILE) and encryption changes on a database must be serialized. Reissue the statement after the current backup or file manipulation operation is completed.
Msg3023
NameDB_IN_USE_DUMP
Severity16
Group3000–3999

What it means

You try to run a Backup, shrink, or alter database command in SQL Server, and you encounter the following messages:

Source: Database Engine events and errors