Describes the cause and action for error messages.
not pulling data from other workbooks
Create an external reference (link) to a cell range in another workbook ...
How to Link Excel 2010 Worksheet to Another Workbook - YouTube
How to make a data connection between two Excel workbooks ...
How to Link Your Data in Excel Workbooks Together - Business
Excel reference to another sheet or workbook (external reference)
External links may be calculated when you open a workbook that was ...
Excel links not working unless source workbook is open? - Stack ...