Getting order items in order API

[rashedoz]

Hello, the order API doesn't send the items of that orders. I want to show the orders with their items like in Amazon Seller central in my inventory. Calling the get items for every order will be unwise. Is there any other way to achieve this?

Amazon Orders API response:
{ "amazonOrderId": "XXX-XXXX-XXXX", "orderItems": [ { "asin": "XXX", "associatedItems": [], "billingCountry": null, "conditionNote": "XXXX。", "conditionSubtype": null, "conditionType": "New", "customerOrderItemCode": "XX/XX+A==", "extendedTitle": "Product Title", "giftMessageText": null, "giftWrapType": null, "harmonizedCode": null, "imageSourceSarek": false, "imageUrl": "XX", "isGift": false, "isHeavyOrBulky": false, "listingId": null, "orderItemId": "XX", "productLink": "XX", "productName": Product Name", "quantityOrdered": 1, "quantityShipped": 1, "quantityUnShipped": 0, "scheduledDeliveryEndDate": null, "scheduledDeliveryStartDate": null, "scheduledDeliveryTimeZone": null, "sellerSku": "xx-xx-xx", "signatureRecommended": false, "transparencyItem": false, "unitPrice": { "Amount": 13000, "CurrencyCode": "JPY", "EncryptedAmount": null } } ], "pickupDate": null, "pickupReadyDate": null, "pluginBadges": [], "pluginOrderStatus": null, "relativeOrderDate": "17 hours ago", "salesChannel": "Amazon.co.jp", "sellerOrderId": null, "shippingService": "Standard", "shippingServiceOption": null, "shippingServiceStringId": "shipping-speed-standard_3248", "timeZoneDetailsMap": { "earliestDeliveryDate": { "offset": 32400000, "shortenedTzString": "JST" }, "earliestShipDate": { "offset": 32400000, "shortenedTzString": "JST" }, "latestDeliveryDate": { "offset": 32400000, "shortenedTzString": "JST" }, "latestShipDate": { "offset": 32400000, "shortenedTzString": "JST" }, "orderDate": { "offset": 32400000, "shortenedTzString": "JST" } } }

I want to add a view like this in my system to show the order items and order id in a row. But calling order items api for all orders to get the items is not convenient.