What is the issue?
PDF/UA > Logical Structure > Structure Elements > Tables > Table header cell assignments > Table header cell has no associated subcells
What does it mean?
In a table, there are header cells (<TH>) that do not have associated data cells (<TD>).
Therefore programs like screen readers can not recognize the reference between header and data cells.
How to fix it?
- Double click on the error message to jump to the corresponding header cell. The header cell is now also selected in the task pane Logical Structure Tree.
- In the case of a simple table: set the correct scope of the selected header cell in the task pane Properties - choose "Row", "Column" or "Both".
- If table header cells do not apply for a whole column or row, you have a complex table. In that case, you have to set the reference between header cells and data cells by using header IDs. For that purpose, use the Table Tool of axesPDF.