Admin API - create order with multiple discounts

[tomaszp]

Hi

I am trying to place order with multiple discounts using Shopify Admin API, however even though order is created, it only has one discount attached. Order API request looks as follows

{
    "order": {
        "id": 0,
        "billing_address": {
            "address1": "350 5th Avenue",
            "city": "New York",
            "company": null,
            "country": "US",
            "first_name": "XX",
            "last_name": "YY",
            "phone": "XXXXXXX",
            "zip": "10118"
        },
        "shipping_address": {
            "address1": "350 5th Avenue",
            "city": "New York",
            "company": null,
            "country": "US",
            "first_name": "XX",
            "last_name": "YY",
            "phone": "XXXXXXX",
            "zip": "10118"
        },
        "customer": {
            "email": "XXXXXXX",
            "first_name": "X",
            "last_name": "Y",
            "phone": "XXXXXXX"
        },
        "financial_status": "paid",
        "fulfillment_status": null,
        "processing_method": "Bolt",
        "line_items": [
            {
                "id": 0,
                "product_id": 47484595601682,
                "variant_id": 47484595601682,
                "fulfillment_status": null,
                "quantity": 2,
                "title": "The Collection Snowboard: Liquid",
                "price": "749.95",
                "tax_lines": [
                    {
                        "price": "118.9",
                        "rate": 0.0888,
                        "title": "Tax"
                    }
                ]
            }
        ],
        "total_tax": "118.9",
        "tags": "",
        "currency": "USD",
        "inventory_behaviour": "decrement_ignoring_policy",
        "shipping_lines": [
            {
                "id": 0,
                "title": "Standard Shipping",
                "code": "Standard Shipping",
                "price": "0",
                "tax_lines": [
                    {
                        "price": "0",
                        "rate": 0.0888,
                        "title": "Shipping Tax"
                    }
                ]
            }
        ],
        "taxes_included": false,
        "discount_codes": [
            {
                "code": "1DOLLAROFF",
                "amount": "1",
                "type": "fixed_amount"
            },
            {
                "code": "2DOLLARSOFF",
                "amount": "2",
                "type": "fixed_amount"
            }
        ],
        "send_receipt": true,
        "send_fulfillment_receipt": true
    }
}

yet only one discount added on created order

How can I create order with multiple discounts using Admin API? I tried both REST API and GraphQL API and none of them seems to be working - even though they take array of discounts as input