CMN.ATO.DDCTNS.000208 and CMN.ATO.DDCTNS.000209: Cost of managing tax affairs amount must be provided

This validation error is referencing Item D10 - Cost of managing tax affairs.

If the item D10 text is red, and you have nothing to report for it, you'll need to delete the Item D10 worksheet to resolve the validation error. Otherwise, make sure the Item D10 worksheet has an amount reported in one of the amount fields for each row.