How to easily check headers and other issues
To check your header names, specify a header row in a block of cells marked as the table you wish to check.
1. Position the cursor anywhere in a table.
2. On the Table Tools Design tab, in the Table Style Options group, select the Header Row check box.
3. Review the header names, or Type new column headings.
For other potential issues, use the Accessibility Checker built into Excel.