Hello lukin4answers,
Welcome to the QuickBooks Community! I will be happy to help! I am curious: did you include the dashes when entering the information? If this is the case, it would register as the wrong format.
In addition, it could be that QuickBooks needs the Texas Workplace Commission Tax Account Number (TWC) since that is nine digits.
If the situation continues, it would be best to contact the state in order to get the proper number.
Let me know if you experience any hiccups! I will be here to assist further. Bye for now.