Hello there, ljcousseau.

I appreciate you coming back to the thread and clarifying your concern regarding updating the correct EIN in QuickBooks. I can see how important to modify this on your end to make sure everything in your company file is up to date. I'll provide additional insights on how editing company's details works in the program and ensure you'll be routed to the right support team to assist you further.

Please know that once you're unable to edit EIN on your end, you have first to change your company info in your payments and payroll accounts. However, based on the message you received; your company's account is registered in an Electronic System for filing payroll forms. With this, I recommend contacting our QuickBooks Online Support Team again. They're the best support group for such inquiries as they can request account information. This way, they'll be able to modify the details that need to be updated as soon as possible so you can file taxes on time.

If you need to see other related information about 1099 and be updated with this form, you can read this article: Get answers to your 1099 questions.

Don't hesitate to add a comment below if you have other questions related to managing 1099 in QuickBooks. I'm always here to guide and assist you further, ljcousseau. Take care!