We have extended Product insert as well as Product edit and Product edit by code to accept also surcharge parameters. This can be done using array surchargeParameters within the request body. You can specify multiple parameters and multiple values. When editing, the complete array has to be provided (the whole list of parameters is always replaced). The parameters and their values must already exist, they will not be created “on-the-fly” – an error would be returned instead. The complete list of surcharge parameters defined in the eshop can be retrieved using List of surcharge parameters.