I'm using the Facebook Graph API to reply a direct message.
I have published my message issuing an HTTP POST request to /CONVERSATION_ID/messages
with a valid access token.
But I receive the following error:
{
"error": {
"message": "(#3) Unknown method",
"type": "OAuthException",
"code": 3
}
}
The same test on the Graph API Explorer returned the same error.
Can anyone please help me out?