Sql Server Error 3154

I created a new database today and was wanting to restore this new database from another exisitng database using the restore option available in the wizard.

But I got the 3154 error as below.

So I had to restore to the restore database command in the SSMS. So here is the first option I tried

restore database databasename
from disk 'filepath.bak'
with replace

but this gave an error because the database and log files were in use for the exisitng database and had to use the with move command as follows.

restore database databasename
from disk 'filepath.bak'
with move data file to 'file path',
move log file to 'file path',
replace



The database was restored successfully.