ReadonlyactionOptional ReadonlyexternalValue to set.
If externalTotalPrice is not given and the priceMode is ExternalTotal, the external price is unset and the priceMode is set to Platform.
Optional Readonlylineid of the LineItem to update. Either lineItemId or lineItemKey is required.
Optional Readonlylinekey of the LineItem to update. Either lineItemId or lineItemKey is required.
Sets the LineItem
totalPriceandprice, and changes thepriceModetoExternalTotalLineItemPriceMode.