@hougaard - The excel file import has been working great up to version 20.5 but now on the preview Sandbox v21 I'm getting this message which I'm struggling to work out - unless it's an issue only related to preview versions.
call to Microsoft.Dynamics.Nav.OpenXml.Spreadsheet.WorkbookReader.Open failed with this message: Specified argument was out of the range of valid values.
Parameter name: value
@hougaard - The excel file import has been working great up to version 20.5 but now on the preview Sandbox v21 I'm getting this message which I'm struggling to work out - unless it's an issue only related to preview versions. call to Microsoft.Dynamics.Nav.OpenXml.Spreadsheet.WorkbookReader.Open failed with this message: Specified argument was out of the range of valid values. Parameter name: value