Reason String property on AUTH missing in 3.15.2.2

In WD15, on page 25, the Property table shows the AUTH packet having the 0x1F (Reason String) property, however on page 88 that property is not mentioned in section 3.15.2.2.

Should the Reason String be a property in the AUTH packet? Or is the table on page 25 wrong? I'm guessing that as it can contain a return code then, the reason string would make sense?

James Sutton