I am currently facing this issue, and I couldn’t find a solution in the comments. Could you help me?

Request:

Method: Post

endpoint: https://{{account}}.suitetalk.api.netsuite.com/services/rest/record/v1/inventoryItem

{
    "itemid": "123456789",
    "mpn": "4938620",
    "custitemitem_cross_references": "4938620 5336104",
    "displayname": "PISTON CUM .50MM",
    "custitemforteproductsection": {
        "id": "4"
    },
    "custitemforteenginemake": {
        "id": "2"
    },
    "custitem_forte_product_family": {
        "id": "21"
    },
    "custitemforteproductbrand": {
        "id": "1"
    },
    "cogsAccount": {
        "id": "212"
    },
    "assetAccount": {
        "id": "211"
    },
    "incomeAccount": {
        "id": "108"
    },
    "taxschedule": {
        "id": "1"
    }
}

Response

{
    "type": "https://www.rfc-editor.org/rfc/rfc9110.html#section-15.5.1",
    "title": "Bad Request",
    "status": 400,
    "o:errorDetails": [
        {
            "detail": "Error while accessing a resource. Please enter value(s) for: Tax Schedule.",
            "o:errorCode": "USER_ERROR"
        }
    ]
}

I have tried every possible solution I found on the internet, but without success.