My Employee ID number has a letter at the end. Turbo tax isn't allowing me to insert the letter. How do I fix this?

An employer identification number (EIN) is a nine-digit number assigned by the IRS. It's used to identify the tax accounts of employers and certain others who have no employees. The IRS uses the number to identify taxpayers who are required to file various business tax returns.

Are there 9 digits before the letter?