I do not recommend deleting your entire file. You should try to fix the rejection instead.
Log back into your return. You will a button that says Fix My return.
Once you select that button, the program will walk you through the steps or ask for the information needed to fix your return.
Please see the attached for additional information.
How to fix a rejected return
Many times, the error might have to do with entering your Adjusted Gross Income (AGI) from 2018. Please see the following for instructions on getting your 2018 Adjusted Gross Income (AGI).
How to find your 2018 AGI
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