process dp command error with multi source universe

hi,

If i create a webi report on multi source universe am getting the below error.

"an internal error occurred while calling 'ProcessdpcomandEx" API. (error: ERR_WIS_30270) (WIS 30270)

But if i create the single source universe on the same connection am able to create the report with out any error.

The only difference is selecting "multi-source" while creating DF.

As you know this is a generic error, how to debug the same?

Am using BOXI 4.0SP3 environment to create the universe using IDT with ODBC connection to sql server database.

does anybody got this error?

Thanks,

Divya