1999 D Penny Die Crack?

You should always post up full coin images of both sides each time you post a coin, sometimes we need the extra info they can provide.

this mark is raised on the fields only and not on the raised devices, So! by the location it could be 1 of 3 things.
1. a die clash, but an image of the obverse would help to see which part of the bust it is.
2. a long die gouge or dent.
or
3. Feeder Finger Damage.

By looking at the angle of it , I'm going with #3 at this point.