I've entered a correct cell phone number for authentication, but I keep getting an error message. What's wrong?

Cell phone numbers must be entered in numerical format with no spaces or dashes.

Correct format: 4238928042
Incorrect format: (423) 892-8042 or 423-892-8042

**If you are a signer and your phone number has been entered incorrectly so that you cannot receive any messages, please contact the person who created the documents for you and request that they update the phone number.**