SharePoint PPS 2013 Dashboard Designer error "Please check the data source for any unsaved changes and click on Test Data Source button"

Hi,

I am getting below error in SharePoint PPS 2013 Dashboard Designer. While create the Analysis Service by using "PROVIDER="MSOLAP";DATA SOURCE="http://testpivot2013:9090/Source%20Documents/TestSSource.xlsx"

"An error occurred connecting to this data source. Please check the data source for any unsaved changes and click on Test Data Source button to confirm connection to the data source. "

I have checked all the Sites and done all the steps also. But still getting the error.Its frustrating like anything. Everything is configured correctly but still getting this error.

Thanks in advance.

Poomani Sankaran