Rxtagchick

This morning I parked my 2013 SEL Edge and removed the key from the ignition. The warning beep started as soon as I opened my door. Key not in the ignition, no lights on. I tried to lock my doors from the button on the inside of the door. They locked, then unlocked. Tried multiple times, no luck. Closed the door and locked using the exterior keypad. That did work but I am concerned about this issue. Any advice?