After i run the sql which adds some columns on one particular table.I am getting this Warning

Warning: The table 'usac499_499A' has been created but its maximum row size (9033) exceeds the maximum number of bytes per row (8060). INSERT or UPDATE of a row in this table will fail if the resulting row length exceeds 8060 bytes.

I got a series of the above warning message , but the coulmn wa created.