how to pass information product title = blank up draf-order

[stylem]

i tried transmission (i don't pass up variantId)
title = null
title= " "
but failed
results returned

[ShopifyDevSup]

Hi @stylem 👋

The `DraftOrderLineItemInput.title` is required when creating a draft order with a custom line item (i.e. no variant ID provided). The `title` cannot be a blank string, and at minimum, the following variables must be supplied:

{
    "input": {
        "lineItems": [{
            "title": "some non-blank item title",
            "originalUnitPrice": 10,
            "quantity": 5
        }]
    }
}

Hope that helps!