Disregarded LLC A casual yes can change who they report
On many vendor forms a yes means they will treat the activity as yours for their information return.

What their system does with a yes
The person who built the form was not writing a tax opinion. They were routing a file. A yes often stores your personal identification number, prints your name on a year-end information form, and suppresses a request for a company return they do not know how to read. If that matches the return you signed, the routing is a kindness. If it does not, you have taught their system a story that will repeat every January.
Unwinding that story is correspondence. You write to them, you attach the return face or a short explanation, and you wait. Nobody on this page can promise a corrected form by a date. The vendor's calendar is theirs. What we can do is keep your books telling the true story while their file catches up, so next year's information form is the only one that has to be fixed.
Leaving the box blank is allowed
If you are unsure, do not pick the answer that feels polite. A blank box and a sentence is a better file than a confident wrong check. The sentence can be as small as this. You are confirming the classification against the return already filed, and you will send the answer when that reading is done. Most vendors can hold an application for that. The ones who cannot are telling you something about the relationship, and that is useful too.
If you already checked it
Save the confirmation page. Do not create a new company to outrun the mistake. Do not file an election in a panic. Send us the confirmation and the return type, and we will say whether the check happened to be right, whether a letter to the vendor is the whole repair, or whether the books are the thing that drifted. The order matters. The company stays put while the letters go out.
January is when a casual yes comes due
Their system does not argue with you in October. It stores the check and waits for the year-end run. That run prints names on information forms and sends them to people who then have to put those forms on a return. If the name on their form is yours, and the activity belongs on your return, the printout is a convenience. If the name is yours and the activity belongs on a partnership return or a corporate return, the printout is a second story that your preparer will have to explain. The explanation is possible. It is cheaper not to create the story.
A correction after the fact is a letter, an attachment, and a wait. Write down the date you checked the box and the words on the confirmation page. Those two lines are the whole history their support team can use. Do not add a new company to the history in order to look organized. A second company would need its own state report and its own bank, and their old file would still say what it says until they change it. The books you keep in the meantime should follow the return you signed, even while their portal shows the casual answer. Your year and their year are allowed to disagree for a while. Your own file should not drift over to match their mistake.
If more than one vendor received the same quick yes, list them. Each file is separate. A fix on one portal does not flow to the next. Bring the list with the confirmations, numbers covered, and we will say which letters are worth writing and which checks happened to be the honest ones. Some of them will be honest. A casual check is not automatically wrong. It is unexamined, and the examination is the work of this page. Write the confirmation date beside the year on the return you signed.
If you already checked yes
Paste what their screen said after you submitted.
You will be talking to the Steven Palmieri practice.