User attempts to create a new workspace in Modernization Workbench and receives "Cannot Create Workpsace" error.  The specific message returned is "The specified DSN contains an architecture mismatch between the Driver and Application".

The message can appear when there are conflicts between identically named DSNs used to define the data source.  In this case, the RMW_REPOSITORY DSN would exist at both the User and System level.  The issue can be resolved by using the System level RMW_REPOSITORY DSN in the Data Source used to connect to the Oracle database.