@harry-clayton-co wrote:
It may have worked in 2020 (leaving the input field blank) but it doesn't work in 2023
It is the TurboTax program that is requiring a phone number so that you can e-file your tax return. Since the program will not accept "Blank" for a phone number then enter a valid US Area Code and any phone number.
For this issue with the TurboTax program I would use the IRS phone number for international callers -
267-941-1000
Note that the IRS does not require a phone number entered on the Form 1040.
