Can't see records in Data Preview | Synced Record Type | Preview currently unavailable due to an error on the source

Hi, 

I'm trying to find the root cause to why I can't see any records in the "Data Preview" screen of a Synced Record Type.

The application works normally and I'm able to push a full sync without any issues. Other records stored in the same database are available in "Data Preview".

Context: The data is stored in company hosted SQL Server.

Error message: Preview currently unavailable due to an error on the source

dataPreviewError

 

Any recommendation to logiles, or actions I can take to understand why the data isn't displaying is appricated. 

Thanks for your help

 

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