Or there may be the misconception that the Settlement Agent is not the entity that writes the check to the United States Treasury.  The purpose of requiring the EIN of the withholding source is so that it can be matched to the return filed by that company.  Does the buyer send a tax return to the IRS with the money?  I don't know what form that would be, that only requires an SSN.  

In any case, I wouldn't blame Intuit for a programming error.  Their fault seems to be a lack of interest in explaining their hands are tied.  They are just following orders, on what IRS will allow.