How big a torsion bar nick is ok?

At the exhaust shop today, I noticed a tiny nick in my new 1.03 bar where a grease nipple has been rubbing against it. The nick seems not much deeper than the thickness of the powder coating, but there it is.

Noone really answered the question in the title of the post, but would my bar now be considered "junk" as well or could I blend this out and carry on? Or just ignore it? The grease nipple has been replaced.
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