SQL

Restore of database 'DATABASE' failed. (Microsoft.SqlServer.Management.RelationalEngineTasks)

Restore of database 'DATABASE' failed. (Microsoft.SqlServer.Management.RelationalEngineTasks), someone asked me to explain?
SQL
Restore of database failed.

TITLE: Microsoft SQL Server Management Studio
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Restore of database 'DATABASE' failed. (Microsoft.SqlServer.Management.RelationalEngineTasks)

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ADDITIONAL INFORMATION:

System.Data.SqlClient.SqlError: The backup set holds a backup of a database other than the existing 'DATABASE' database. (Microsoft.SqlServer.SmoExtended)

For help, click: https://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=16.100.46437.65+(SMO-master-A)&LinkId=20476

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BUTTONS:

OK
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When I tried to restore the SQL database it was failed and got the above message. 
Solution:
The same database name is already exists. So, I renamed it and then tried restore. Finally, it works fine. 
The below video shows how to restore SQL server database database without this error.

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