SQL Server: create failed for user/ User, group, o...

If experiencing the following errors in SQL Server: Create failed for User ‘xyz’. (Microsoft.SqlServer.Smo) User, group, or role ‘xyz’ already exists in the current database. (Microsoft SQL Server, Error: 15023) The above error can sometime occur when migrating a SQL Server Database from one staged environment to another. If both those environments have the same users present you can get issues...