1.4K views | Are you text messaging an #SMS short code and receiving the following error messages? "Short code may have expired or short code texting may be blocked on your account. Msg 1051." Or... "Service Access Denied" Watch this text message #marketing video to see what causes these SMS short code error messages, and how you can fix the issues. You can watch the video below or on YouTube (link is in the first comment). | Tatango | Facebook