Microsoft Dynamics AX – Cannot open database “AXDBRain” requested by the login

While doing some development in new Microsoft Dynamics AX , while adding a field in a Data entity ,during synchronization I got below error :

Error        Cannot open database “AXDBRain” requested by the login. The login failed.
Login failed for user ‘xxxxxxx-xxxxxxxx’. when try to connect to business database with provided configuration.  
 

This error was misleading  , because AXDBRain is not the correct DB which my AX is connected with.
        
Solution :

Go to C:UsersuseridDocumentsVisual Studio 2015SettingsDefaultConfig.XML
and change the following :

<BusinessDatabaseName>CorrectDBname</BusinessDatabaseName> 

Save the file.

Restart VS and try to do Sync again , hopefully this will help to sync.
 

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