Loss brought forward from earlier years set-off against 2021-22 profits warning error

I’m trying to file the self assessment and in the box 29 Loss brought forward from earlier years set-off against 2021-22 profits, when I’m putting any value there is a warning. I have made loss last year £2379 however that is a calculation in the box 22 in previous self assessment. I want to use that loss in 2021-2022 self assessment profit, can I do that? Can I submit even it there is a warning? Do I had to inform HRMC in previous assessment that I had a loss and want to carry forward for next year in some point of the assessment? Any help will be appreciated. Thank you

Hi,

You would enter the loss carried forward, to be uses against the profit of the same trace in 21/22.  

When you receive a warning, it is so that you can review your entries, to ensure they are correct and in the correct boxes.  

If they are, then click on 'save and continue', so that you can move on to the next section of the return.  

When you receive an error message, that is quite different.  This means an entry on the page is incorrect in some way. 

Thank you.