Hello again, Pryoman. If you are using the scanning program that came with the MC9090, then I would check in the application's options to see if you can set one scan or decode option. If that doesn't work, then feel free to send me a message or email me at: [email protected] and let me know what messages you have to choose from, what software you are using, and what you are doing generally when you get the message. I'll be happy to help you troubleshoot. I hope this helps. Good luck!