One of the benefits of doing a short sale over a foreclosure is the affect on your credit score. Well, if you went through a short sale on your Fannie Mae insured loan, you may want to check your credit report. According to a report from Fannie Mae "the standardized computer software the credit industry was relying on lacked a specific code for short sales". This has resulted in short sales being reported to credit agencies as foreclosures. Check your credit report and dispute the error. A foreclosure can bring your credit score down hundreds of points.