Datamart Incremental Refresh - Loading data failed

[Anonymous]

I'm testing the incremental refresh feature with a Datamart and do not understand the resulting error. Below are the steps to reproduce my error.

The data source is a simple Excel workbook with 13 rows of data: 

These are the incremental refresh settings:

After clicking "Save", the status window displays the "Wrapping things up" step for ~30 minutes:

After ~30 minutes, I receive this error message:

Any help would be appreciated in understanding the error message. Thanks!

In case it's helpful to someone at Microsoft, here is the full text of the error message:

InternalError

ErrorMessageLocal Sql execution failed. Message=A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: TCP Provider, error: 0 - A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.)

Activity ID: undefined
Request ID: undefined
Status code: 500
Error Code: InternalError
Batch ID: 6eacbe53-32b0-404f-ad8d-76210361b347@beed7de5-d729-41d9-b689-02077bd353be$2022-10-28T15:19:19.2533606Z@bd7344c6-58aa-4aed-937f-094c32b5f21f

[v-yadongf-msft]

Hi @Anonymous ,

Looks like something is broken between the datamart and its underlying SQL database.

Are you able to access the datamart's Power Query section and refresh the queries in preview?

Best regards,
Community Support Team _Yadong Fang

[Anonymous]

Hi @v-yadongf-msft,

If I go to the Power Query section, I am able to refresh and see the data in the Excel workbook:

Any help would be appreciated!

[hndodds]

I'm having the same issue and looks similar to https://community.powerbi.com/t5/Issues/Error-loading-data-in-datamart-after-setting-up-incremental/...

I am connected to a chain of Power Platform dataflows (A>B>C). Dataflow A is an extract/filter from the SQL server, the next 2 do merges/column selection/custom columns. The dataflows exist in a workspace for ETL, and I'm trying to set the datamart up in a workspace just for approved datasets/flows. I have incremental refresh set up on all 3 dataflows. The dataflows are fine and worked as a source for the datamart prior to incremental refresh being set up, but since I added incremental refresh I get the error above. I need to have incremental refresh on the data and transformations to reduce processing time and data latency. I tried copy/paste the queries from dataflow C into a new datamart, thinking it was some sort of timeout issue, but I get the same error.

Activity ID: undefined
Request ID: undefined
Status code: 500
Error Code: InternalError
Batch ID: 79969806-d1cf-4e1e-be02-734eb3399e27@47e27d5c-331f-43c0-870e-60a1419e4e22$2022-11-01T15:50:57.4896353Z@e6f77aa7-34d6-40ba-9be0-b0b05737f447