Sage 50 Accounts

Hi, I'm trying to submit my EC Sales list for January 2021 through Sage 50c as normal but it's coming up with error 1207 stating that "you are not required to sumit EC Sales declarations for periods starting 1 January 2021 or later" there is a link…

I know I can run EC Sales reports from Sage and it will populate the return figures, but does it flag the invoices as 'reported' somehow when I hit 'save'? I'm concerned that there will be invoices which maybe weren't updated to the ledger at the time…

I have to bring forward a sale from last year to this year, deposit amount which is not due for EC Sales or VAT until completion of manufacture. The journal entry is dated 31.08.2018: a DR to sales £xxx.xx T9, and a CR to sales £xxx.xx T4. Is there…