[FIXED] Posting an image to a reply using Graph API

Issue

I'm trying to post an image from a URL to reply to a certain comment on Facebook. The Graph API documentation at https://developers.facebook.com/docs/graph-api/reference/object/comments/ mentions that you can publish an image from a URL using the 'attachment_url' field.

When I try that in Graph API explorer by posting attachment_url to {comment_id}/comments, I get the following error:

{
  "error": {
    "message": "An unexpected error has occurred. Please retry your request later.", 
    "type": "OAuthException", 
    "code": 2
  }
}

If I try to post a message, it works perfectly, but attachment_url doesn't work, even though the documentation mentions it. Anybody has any idea what's going on here?

NOTE: I wanna first try to knock it off using the Graph API Explorer, then I would move to my desired language. As such, I don't have any code to paste here. Thanks

Solution

This was a bug in the API and about 2 weeks after my report, Facebook has finally resolved this. Here is the bug report:

https://developers.facebook.com/bugs/1487638524783972

Answered By - Ibrahim