DM_GWPipeline_Gateway_DataSourceAccessError

Hi rveerasamy ,

There are several points you may considerate:

1.You were unable to connect to the specified data source. Be sure to validate the credential connect information provided for that data source.

2.Please check the account you're using for the data source is a server admin for that data source, assuming the data source is SSAS,  for more information, see Grant server admin rights to an Analysis Services instance.

3.You may check the service account for Analysis Services is missing the token-groups-global-and-universal (TGGAU) directory attribute.

4.Upgrade the gateway to the latest version.

You may search the issue message "DM_GWPipeline_Gateway_DataSourceAccessError" in the article Troubleshoot gateways - Power BI , and find corresponding solutions in it.

Best Regards,

Amy 

Community Support Team _ Amy

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