User or role already exists in the current database

When you try to give a user access to a database you get the above message. To resolve this you need to have access to SQL Server Enterprise Manager.

Open Enterprise Manager then go to Security>Logins, right-click on the user having this problem then go to Properties. Open the Database Access tab then Unmark or Uncheck the database you're giving the user access to.

Go back to Great Plains then try to give the user access again.

Microsoft Dynamics GP Demos

I've been seeing a lot of questions in forums asking if there are available demos for Microsoft Dynamics GP. Here are links to the demos:

Foundation I
Foundation II
Financial Management Overview
Financial Management I
Financial Management II
Distribution I
Distribution II