Form 8453 is used when you e-file. You did not e-file since amended returns can't be e-filed.
There's nothing you can do to intercept your amended income tax return. You'll have to wait for them to process it then you'll get a letter requesting the 1099-B information. There will be a delay.
- If you want to try and call the IRS, the phone number is 1-800-829-1040.
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