HTTP request : url set by Inject-node or Function-node

URL is responding when entered via Inject, or via Chrome browser.
Responding with "Forbidden" when entered via Function Node.
What is the difference ?

Cheers,
T

[
    {
        "id": "4b706968f2762ff3",
        "type": "function",
        "z": "c3eacf524719b6d5",
        "name": "set URL",
        "func": "var url = \"https://opendata.elia.be/api/explore/v2.1/catalog/datasets/ods087/records?select=*&where=region%20%3D%20%22Flanders%22%20and%20dayaheadconfidence10%20%2B%20dayaheadconfidence90%20%3E%200&order_by=datetime&limit=96&timezone=Europe%2FBrussels&refine=region%3A%22Flanders%22\";\nmsg.url = url;\nnode.warn(url);\nreturn msg;\n",
        "outputs": 1,
        "timeout": 0,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [],
        "x": 280,
        "y": 4040,
        "wires": [
            [
                "4f2105828abfe760",
                "fa586f505cb20735"
            ]
        ]
    },
    {
        "id": "d1876e34b33f62e0",
        "type": "http request",
        "z": "c3eacf524719b6d5",
        "name": "ELIA API V2.1",
        "method": "GET",
        "ret": "obj",
        "paytoqs": "body",
        "url": "",
        "tls": "",
        "persist": false,
        "proxy": "",
        "insecureHTTPParser": false,
        "authType": "",
        "senderr": false,
        "headers": [],
        "x": 460,
        "y": 3940,
        "wires": [
            [
                "83123d33249176e5"
            ]
        ]
    },
    {
        "id": "1c2288a47b4b5d7e",
        "type": "inject",
        "z": "c3eacf524719b6d5",
        "name": "inject url",
        "props": [
            {
                "p": "url",
                "v": "https://opendata.elia.be/api/explore/v2.1/catalog/datasets/ods087/records?select=*&where=region%20%3D%20%22Flanders%22%20and%20dayaheadconfidence10%20%2B%20dayaheadconfidence90%20%3E%200&order_by=datetime&limit=96&timezone=Europe%2FBrussels&refine=region%3A%22Flanders%22",
                "vt": "str"
            }
        ],
        "repeat": "",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "topic": "",
        "x": 120,
        "y": 3940,
        "wires": [
            [
                "d1876e34b33f62e0",
                "d95342606cf8f9ac"
            ]
        ]
    },
    {
        "id": "83123d33249176e5",
        "type": "debug",
        "z": "c3eacf524719b6d5",
        "name": "debug 237",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "false",
        "statusVal": "",
        "statusType": "auto",
        "x": 630,
        "y": 3940,
        "wires": []
    },
    {
        "id": "7638a54ef79ac673",
        "type": "comment",
        "z": "c3eacf524719b6d5",
        "name": "https://opendata.elia.be/api/explore/v2.1/catalog/datasets/ods087/records?select=*&where=region%20%3D%20%22Flanders%22%20and%20dayaheadconfidence10%20%2B%20dayaheadconfidence90%20%3E%200&order_by=datetime&limit=96&timezone=Europe%2FBrussels&refine=region%3A%22Flanders%22",
        "info": "",
        "x": 1030,
        "y": 3900,
        "wires": []
    },
    {
        "id": "4f2105828abfe760",
        "type": "http request",
        "z": "c3eacf524719b6d5",
        "name": "ELIA API V2.1",
        "method": "GET",
        "ret": "obj",
        "paytoqs": "body",
        "url": "",
        "tls": "",
        "persist": false,
        "proxy": "",
        "insecureHTTPParser": false,
        "authType": "",
        "senderr": false,
        "headers": [],
        "x": 460,
        "y": 4040,
        "wires": [
            [
                "277347341e19c218"
            ]
        ]
    },
    {
        "id": "98d892b9c1441650",
        "type": "inject",
        "z": "c3eacf524719b6d5",
        "name": "",
        "props": [
            {
                "p": "payload"
            }
        ],
        "repeat": "",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "topic": "",
        "payload": "",
        "payloadType": "date",
        "x": 120,
        "y": 4040,
        "wires": [
            [
                "4b706968f2762ff3"
            ]
        ]
    },
    {
        "id": "277347341e19c218",
        "type": "debug",
        "z": "c3eacf524719b6d5",
        "name": "debug 238",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "false",
        "statusVal": "",
        "statusType": "auto",
        "x": 630,
        "y": 4040,
        "wires": []
    },
    {
        "id": "d95342606cf8f9ac",
        "type": "debug",
        "z": "c3eacf524719b6d5",
        "name": "debug 239",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "false",
        "statusVal": "",
        "statusType": "auto",
        "x": 310,
        "y": 3980,
        "wires": []
    },
    {
        "id": "fa586f505cb20735",
        "type": "debug",
        "z": "c3eacf524719b6d5",
        "name": "debug 240",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "false",
        "statusVal": "",
        "statusType": "auto",
        "x": 470,
        "y": 4100,
        "wires": []
    }
]

The inject sends no msg.psyload, the function does as there is one set in the inject. As you have selected set payload as body of request in the http node, the payload is attached as the body, try not sending a payload or selecting ignore.

ok.
I changed in the HTTP Request-node : "Payload: Ignore", and it works.
Thanks.
T