ApiDirectPurchaseRequestCartItem

{
    "count": 1,
    "productKey": "mySuperDuperProductKey",
    "variantKey": "mySuperDuperVariantKey",
    "name": "My Super Duper Product",
    "priceInCredits": 1.23,
    "accountingCategoryKey": "common.service",
    "taxRate": 0.19,
    "ean": "1234567890123",
    "reference": {
        "link": "string",
        "text": "string",
        "reference": "string"
    }
}