Unable to remove event wall post via Facebook API, getting invalid ID error

[Neo_Movies]

I’m having trouble removing a post I created on my Facebook event page. When I create the post, everything works fine, but when I try to delete it using the returned ID, I get an error.

Here’s how I create the post:

$my_event = "123456789012345";

$post_data = array(
  'access_token' => $user_token,
  'message' => 'Sample message for testing',
  'name' => 'Post Title Here',
  'caption' => "This is the caption text"
);

$response = $fb_api->api($my_event."/feed", "POST", $post_data);

I get the ID from the response:

$retrieved_id = $response["id"];
// returns something like: 123456789012345_987654321098765
// format appears to be EVENTID_MESSAGEID

But when I attempt to delete it:

try {
  $fb_api->api($retrieved_id, "DELETE");
}
catch (FacebookApiException $ex) {
  $error_msg = $ex->getMessage();
  echo $error_msg;
}

I keep getting this error: (#100) Invalid post id

I’ve also tried different approaches:

$fb_api->api("/123456789012345_987654321098765/", "DELETE"); // still invalid
$fb_api->api("/987654321098765", "DELETE"); // unsupported request
$fb_api->api("/123456789012345/feed/987654321098765", "DELETE"); // unknown path

It’s frustrating that the API gives me an ID that doesn’t work for deletion. Has anyone successfully deleted event wall posts using the Facebook API?

[scarlettturner]

Had this exact issue a few months ago with an event management system. Turns out it was a timing problem. Facebook’s API has a delay between creating a post and when you can actually delete it. I fixed it by adding a 2-3 second delay between creating and deleting the post. Also check your API version - older ones had weird quirks with event post deletions. Try a GET request to the post ID first to make sure it exists before you delete it. If the GET fails, the post probably hasn’t propagated through Facebook’s system yet.

[miar]

This usually happens when your access token doesn’t have the right permissions or it’s expired. You need publish_actions permission (or pages_manage_posts for newer API versions) to delete posts. Also check if you’re using a user token vs. a page token - event posts sometimes need page-level permissions. I had the same problem and regenerating the access token with explicit delete permissions fixed it. Your ID format looks right, so it’s probably a permission issue.

[Liam23]

had the same issue too! just use the post id after the underscore, not the whole thing. and make sure your access token has publish_actions permission, it’s a must for deletion to work.