Definitive list of carrier encodings for the fulfillmentCreat GraphQL API call

Paired it right back to

mutation { 
    fulfillmentCreateV2(fulfillment: 
        {
            lineItemsByFulfillmentOrder: 
            {
                fulfillmentOrderId:"gid://shopify/FullfilmentOrder/4xxxxxxxxxxx2"
            },
            notifyCustomer:false 
        }
    ) {
        userErrors {
            field
            message
        }
    }
}

and now it gives me

{
    "data": {
        "fulfillmentCreateV2": null
    },
    "errors": [
        {
            "message": "invalid id",
            "locations": [
                {
                    "line": 2,
                    "column": 5
                }
            ],
            "path": [
                "fulfillmentCreateV2"
            ]
        }
    ],
    "extensions": {
        "cost": {
            "requestedQueryCost": 11,
            "actualQueryCost": 1,
            "throttleStatus": {
                "maximumAvailable": 1000.0,
                "currentlyAvailable": 999,
                "restoreRate": 50.0
            }
        }
    }
}

So now it doesn’t like the fulfillmentCreateV2 ?! Is the order ID in v2 different from that in v1?!