The P&L section of Sage CT requires the profit or loss to be allocated to a particular trade. Where this allocation does not agree with the profit or loss, a warning is displayed. However, it is possible to file the CT return with this warning present. See attached a recent example, where there was a loss, but a positive figure has been entered.
If it was not possible to file the CT return until all warnings have been resolved, or at least highlight these warnings at the filing stage, then filing errors would be elimitated.