Why isn't my discount applying correctly in REST API with PHP?

Shopify Discussion
6

I still have a bug

i send

{
    "email": "3eb4obnt63953452mxzacq5r@pocztavp.pl",
    "line_items": [
        {
            "variant_id": "42826415341822",
            "quantity": "3",
            "applied_discount": {
                "value_type": "fixed_amount",
                "value": 149,
                "amount": 447,
                "title": "Promo",
                "description": "Promo"
            }
        }
    ],
    "shipping_address": {
        "first_name": "test",
        "last_name": "test",
        "address1": "test1",
        "phone": "121212",
        "city": "test",
        "zip": "testt",
        "country": "Poland"
    },
    "shipping_line": {
        "title": "Kurier",
        "price": 0
    }
}

i useed

https://github.com/phpclassic/php-shopify and ani Version 2022-01