Are you sure that is box 7?
IF its for an IRA distribution, there is a separate checkbox that is "near" box 7 to check (or "X"ed ) that indicates the distribution is from an IRA-or-SEP-or-SIMPLE (IRA/SEP/SIMPLE) retirement plan.....but is not actually box 7 itself.
Perhaps a mis-alignment of their markings? Look for another letter nearby to the actual box 7 that does match the available codes, but perhaps mis-aligned from where it should be.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
