RadGrid 508 compliance request for hierarchical grid. RF-5 Complex Tables are Missing ID or Headers Attributes Data tables have multiple logical levels of row or column headers and lack the necessary coding associating the data cells with their respective headers. This issue is a violation of 1194.22(h) in Section 508 and 1.3.1 in WCAG 2.0. Add id= and headers= attributes to all cells to correctly associate data cells with their respective row and column headers. For further assistance see http://www.hhs.gov/web/policies/webstandards/htmltable.html and http://webaim.org/techniques/tables/data.