What to do with manual adjustment in balance sheet?

http://community.quickfile.co.uk/t/frs-reduction-of-1-changes-in-the-middle-of-vat-report/5658

Hi Glenn, as you recommended in the above thread, I did manually adjusted the VAT return “NET VAT to be paid to Customs” box to get the correct amount of tax (because my FRV percentage changed in the middle of the VAT return). However I now have the manual adjustment in the balance sheet.
What do I do about it?