Describes the cause and action for error messages.
Error Message(English)：
data source not found excel pivot table
Excel PivotTable error "Data source reference is not valid"
https://support.microsoft.com/en-us/help/2862807/excel-pivottable-error-data-source-reference-is-not・・・
How to solve data source reference is not valid in Excel Pivot table ...
https://www.youtube.com/watch?v=5h2mPNHcDxQ
https://www.youtube.com/watch?v=5h2mPNHcDxQ
'Cannot Open PivotTable Source File' Excel Error Fix - YouTube
https://www.youtube.com/watch?v=YpleHidYH5A
https://www.youtube.com/watch?v=YpleHidYH5A
pivot table - Excel data source reference is not valid - Super User
https://superuser.com/questions/330718/excel-data-source-reference-is-not-valid
Excel when connected to external data: "We found ...
https://superuser.com/questions/1121810/excel-when-connected-to-external-data-we-found-a-probl%D0%B5・・・
Can I use an excel book in SharePoint as my ...
https://superuser.com/questions/1104004/can-i-use-an-excel-book-in-sharepoint-as-my-eternal-data-sou・・・
Error when refreshing data from external source ...
https://superuser.com/questions/486031/error-when-refreshing-data-from-external-source-in-excel-data・・・