You can check your e-file status to confirm if your return was filed successfully: How do I check my e-file status? - Community
As for mistakes, the IRS catches some mistakes and may reject your return. If this happens, you can fix whatever caused the rejection and re-file: How do I fix a rejected return? - Community
If your return is accepted, but you still need to change or add something to your return (i.e. an additional W-2 you received after filing your return), you can amend it. Refer to the following TurboTax for instructions: How to amend (change or correct) a return you alre ...
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