Error 3154
Severity Level 16
Message Text
The backup set holds a backup of a database other than the existing '%ls' database.
Explanation
The backup set is a backup of a database with the same name as the database to which you are restoring. However, the database being restored was created by a different CREATE DATABASE statement than the database in the backup set. Even though the databases have the same name, they are in fact different databases.
Action
Either overwrite the existing database by reissuing the RESTORE DATABASE command using the WITH REPLACE clause, or restore the backup set to a different database name. If you restore the backup set to a different database name, ensure that the files that will be created do not already exist and are not being used by another database. If you chose the wrong backup set to restore, select a backup of the existing database and restore it.