What are the most common mistakes that get a Diversity Visa entry disqualified?

The law allows only one entry per person per registration period, and the Department of State uses technology to detect duplicates. If more than one entry is submitted for you, you will be disqualified, so be cautious if a third party offers to file on your behalf.

Other frequent problems are photographs that do not meet the strict specifications, missing or incorrect family information, and entries submitted outside the registration window. Because there is no fee to enter, anyone charging you to submit is offering a paid convenience, not an advantage, and errors they make can cost you eligibility.