SSIS Conncetivity issue to SSAS tabular models

Hello Team,

I am getting the following error message  when I tried to procss the tabular models.

Error when manually processing table on P005:
The operation failed because the source database does not exist, the source table does not exist, or because you do not have access to the data source.

More Details:
OLE DB or ODBC error: Login timeout expired; HYT00; A network-related or instance-specific error has occurred while establishing a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct and if SQL Server is configured to allow remote connections. For more information see SQL Server Books Online.; 08001; Named Pipes Provider: Could not open a connection to SQL Server [5]. ; 08001.
A connection could not be made to the data source with the DataSourceID of 'ce5d450e-aa95-4c4d-93ba-2ebbd7c6d625', Name of 'myMetricsDataMarket'.
An error occurred while processing the partition 'IRIS Extract_f302a8e2-141f-438a-ae7f-9ee39a64d096' in table 'FactIrisExtract_c804c558-2c83-4198-a932-45ba9acd530f'.
The current operation was cancelled because another operation in the transaction failed.

Could Please let me know the resolution
Who is Participating?
lcohanDatabase AnalystCommented:
I'm not sure how the SSIS package is executed but most likely there's no "...connection could not be made to the data source with the DataSourceID of 'ce5d450e-aa95-4c4d-93ba-2ebbd7c6d625', Name of 'myMetricsDataMarket'." due to some authentication issue. My guess is that SSIS is executed via SQL Agent in which case the SQL Agent Start-up account must have access to that SSAS and underlying tables or otherwise the account that is running the SSIS package. You could create a proxy if you don't have one already and use that one instead of granting SQL Agent Start-up account (unwanted) elevated security.
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