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Impact of entering incorrect crank arm length

i use an XC100 set of pedals on a Rene Herse crank set.

I mistakenly thought that the crank set had a 172.5 mm crank length. Turns out they are 171 mm.

Does anyone know what the impact is on my recorded power by entering a crank arm length that is longer than the real crank arm?

Is it overstating or understating my power?