if you entered summary totals the IRS wants details of each sale. You cannot attach an external document to an e-filed return. If you enter each sale separately, the iRS does not get further documentation unless requested.
for summary totals entries:
If you’re considering using a substitute 1099-B in a foreign language, I recommend consulting with a tax professional or directly contacting the IRS to ensure compliance with their guidelines. They can provide accurate and up-to-date information based on your specific situation
when doing your US return amounts must be translated in US currency
https://ttlc.intuit.com/community/tax-credits-deductions/discussion/how-to-report-sale-of-foreign-st...
if you e-file the 1099-B substitute would be separately submitted using form 8453. see instructions
https://www.irs.gov/pub/irs-pdf/f8453.pdf
