Add some product links in 1 request

[harits_rahman]

Hi anyone! I've tried for make a request like this:

{
    "items": [
        {
            "sku": "product-test",
            "link_type": "crosssell",
            "linked_product_sku": "product-1"
        },
        {
            "sku": "product-test",
            "link_type": "crosssell",
            "linked_product_sku": "product-2"
        },
        {
            "sku": "product-test",
            "link_type": "related",
            "linked_product_sku": "product-1"
        }
    ]
}

for product-test, it's already have a crosssell product link. I think it's must be updated, but there's no update. any solutions?