Not Getting Home Office Deduction because net profit was zero?

My wife uses a home office for her business and made a profit last year.  However, after completing the questions, it states that "because the net profit for her business was zero or less, which means she can't get the home office deduction.  It then says that "your home office deduction of $x,xxx from 2020 will be carried over to 2022".  Is the real reason due to carryover from 2020 exceeds the deduction limit so it can be carried over to next year?