Typo in definition of tag 871 "InstrAttribType"

Imported from previous forum

[ original email was from Andrew Thompson - anthomps@blackrock.com ]
In Volume 6 of the 4.4 spec with errata (pg 299) the definition of tag 871 InstrAttribType, for the value 8 “Coupon period” is:

“8 = Coupon period (if not semi-annual). Supply redemption date in the InstrAttribValue (872) field”

This looks like a copy and paste error to me - surely the value of 872 would be the number of months in the couple period:

871=8
872=3 <- quarterly coupon payments

871=8
872=12 <- yearly coupon payments

Or did I misunderstand this field?