Possible enumeration values:

ValueDescription
RoundBeforeSum

Value saying that VAT amount of invoice header should be calculated as SUM of rounded invoice line VAT amounts

RoundAfterSum

Value saying that VAT amount of invoice header should be calculated as rounded SUM of invoice line VAT amounts

RoundRevenueAccountVatCode

Value saying that VAT amount of invoice header should be calculated as rounded SUM of grouped invoice line VAT amounts

RoundExactOnline

Value saying that VAT amount of invoice header should be calculated as rounded SUM of grouped invoice line VAT amounts