A question about minimum Determination

Page 38 of Icons Assembled : "A hero’s minimum Determination level is 1, regardless of the number of powers the hero may have"

But in the Achievement Optional rules

page 184 : "Each achievement allows the players to apply a corresponding change to their heroes. Changes that require reducing Determination level can reduce it as low as 0, but no lower. A character with Determination 0 does not gain Determination at the start of a new issue, only earning it in play, and characters with Determination level 0 cannot apply changes that reduce
Determination level until they have first increased it (via a major change) to 1 or more."

Is this an error ?