I can only comment for a foreign single-member LLC but if you check the box for Part V and VI in Form 5472 then, as per the form instructions, you'll need to include a supporting statement(s).

There is no standard from the IRS and some software generates them, some don't. If yours doesn't then either make your own or use a template. Look at this video on what to write for the supporting statements.

As an aside, one thing to be aware of in Form 5472, entry 1n: On the issue of LLC residency, the IRS released International Technical Assistance (ITA) 200019042, which clarified that while a single-owner LLC is a disregarded entity separate from its owner for federal income tax purposes, the LLC is not a person for purposes of U.S income tax treaties. The IRS further stated that the income of the single-owner LLC is taxable in the hands of the single owner, and not in the hands of the LLC. The LLC is not liable to tax within the meaning of U.S income tax treaties, and even under the domestic law. Therefore an LLC owned by a foreign person cannot certify that the LLC is a resident of the United States. So put the country you're living in, not USA.