Retirement tax questions

The process has failed for me. I’m using the CD download version where the menu names are not similar. But I believe I have managed to go through the spirit of the deleted and redo the calculations. Ultimately, I get a message that says that since I am getting a deduction that I cannot go through the deferral process and therefore cannot decline the self-employment tax reduction. Note that I have two business - one that indicates a profit and the other a loss. The issue is the one with the loss. Help?!?