HM Revenue & Customs

Why is the error message 'all fields must be numeric' displayed when I enter my figures on the online VAT return?

When filling in your return you may have entered characters that are not allowed in one or more of the boxes, for example, pound signs, spaces, commas or letters. To fix the error, please delete any information from the relevant boxes and re-enter the figure using numbers only. You can include a minus sign (-) for negative numbers if needed.