External Tax Amount

The new cart tax mode ExternalAmount allows to set the totalGross, taxRate and taxPortions fields on cart's content externally by the client. This is useful in case you prefer to have those values calculated by a third party service.

• [API] Added the TaxMode ExternalAmount.
• [API] With it, it is possible to set the line item tax amount, the custom line item tax amount, the shipping method tax amount as well as the cart total tax.