"How do I know if I am finished with my income tax? I printed it, but I'm not sure if I'm done. Do I need to do more, or just send it in?"

I have always E-filed in past years, but this year when I got to the end the software kept saying my taxable amount on my 1099-R should be less than gross distribution. Well it's not, it exactly the same.  Just print it and send it in.  I did that, so I'm I done?