literal error

NOUN
13 LETTERS · STARTS WITH L

literal error is a valid 13-letter word worth 12 points in Scrabble and 14 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
L1I1T1E1R1A1L1E1R1R1O1R1
1 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 1 + 1 =12 PTS
DOUBLE WORD → 24TRIPLE WORD → 36
MEANING

What does literal error mean?

NOUN · 1 SENSE
1

A mistake in printed matter resulting from mechanical failures of some kind.