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"System.Customer.UserImportBatchSize" – Mandatory attribute. This is represented as an integer, and represents the number of users/rows to process in a batch run. This is included for performance reasons.
"System.Customer.UserImportEmailNotification" - Mandatory attribute. This is the email address(es) that the User Import reports successes and failures to. Comma (',') delimited.
"System.Customer.UserImportClassName" - Optional attribute. This is the name of the class that inherits from the default CustomerUserIntegration class. (e..g "CUKIntegration" for CUKIntegration.cs : CustomerUserIntegration.cs)
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