I think I've made a few mistakes on my "already filed" return? Help please!

[ChrisVonHoep · Accepted solution]

If federal is already e-filed and pending, and you need to add information to or modify your return, you need to wait until it is either approved, or rejected.

If rejected, you can update your return and re-file.

For more information see Amending a return.

If accepted please see the following regarding amending a return:

https://ttlc.intuit.com/replies/6483561