Southwest is having an error with certain flight reservations on their website. They are aware of the error. Certain reservations are showing refundable even whenever they are nonrefundable flights. They are aware of the glitch and are honoring it, I believe. I got that message whenever I changed a flight that had a lower fare after my original booking. I sent their Facebook a message showing the screenshot and they told me they'd process a refund and appreciated me letting them know I had seen that error when I shouldn't have. I ended up using the credit a few days later so I didn't get the refund, but they did offer it to me!