Hi folks.

I'm not a developer but trying to register a Mobile number for Whatsapp API, but getting this error. Spent lot of time couldn't get past it.

==== Query curl -i -X POST \ "https://graph.facebook.com/v21.0/440238399180112/register?messaging_product=whatsapp&pin=336699&access_token=" ==== Access Token Info { "perms": [ "whatsapp_business_management", "whatsapp_business_messaging", "public_profile" ], "user_id": "10227106540475420", "app_id": 1287663125557687 } ==== Parameters - Query Parameters

{} - POST Parameters

{ "messaging_product": "whatsapp", "pin": "(removed) " } ==== Response { "error": { "message": "Unsupported post request. Object with ID '440238399180112' does not exist, cannot be loaded due to missing permissions, or does not support this operation. Please read the Graph API documentation at https://developers.facebook.com/docs/graph-api", "type": "GraphMethodException", "code": 100, "error_subcode": 33, "fbtrace_id": "A1Gqi97M2VC0n-AAAiQF9L7" } } ==== Debug Information from Graph API Explorer - https://developers.facebook.com/tools/explorer/?method=POST&path=440238399180112%2Fregister&version=v21.0&messaging_product=whatsapp&pin=336699