Look for a
Mismatch
If you open the Excel spreadsheet and review the labels
in the first row, you may notice that the labels are not spelled the
same as the Mail Merge Fields in the Word document.
The labels in the spreadsheet have no space between First
and Name. It says: FirstName.
The Mail Merge fields in our document have an underscore:
<<First_Name>>.
Match, Match, Match: It's like getting the right
shoes on the right kid. The fields have to match.
Exam 77-425 Microsoft Word 2013 Expert
3.0 Create Advanced References
3.3 Manage forms, Fields, and Mail Merge Operations: Troubleshoot Mail Merge Errors