Here is the Answer, I got from IBI InfoResponse
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You cannot use Explicit SQL Server security on the adapter with a Windows id.
It may only use a SQL Server id. You would need to use trusted security on
the SQL Server adapter to use Windows authentication. In order to be
impersonated at the user level you would use OPSYS security on the
Reporting Server, otherwise impersonation will be based on the user that
started the Reporting Server service.
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Thanks, Virul
Virul Patel
Product :
iWay Data Migrator (8.1)
WebFocus 8.1
SQL SERVER 2012