Need help: Error Unable to post to public group Facebook using n8n

Hi everyone,

I'm currently building an automation workflow in n8n to cross-post content from Google Sheets to Facebook.

I have successfully managed to post to my Facebook Fanpage using a Page Access Token via the HTTP Request node. However, when I try to post to a Public Facebook Group, I keep getting the following error:

Bad request - please check your parameters

Unsupported post request. Object with ID '1357405965730762' does not exist, cannot be loaded due to missing permissions, or does not support this operation.

My Setup:

Tool: n8n (hosted on Docker)

Node: HTTP Request (POST method)

Permissions granted:

pages_show_list

pages_messaging_subscriptions

pages_read_engagement

pages_manage_posts

I've heard rumors that Meta deprecated the Groups API for most apps recently.

My questions:

Is it still possible to post to a Facebook Group using a standard Graph API Token in 2026?

Any advice or workarounds would be greatly appreciated! Thank you!

Comments

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buildwithnavya•3 months ago•1

Pretty sure it’s a permissions issue.

Posting to Pages works with standard tokens, but Groups are much stricter now. You usually need:

  • the app added to the group
  • publish_to_groups permission (and approval from Meta)

Also, if the group isn’t linked properly to your app/user, you’ll get that “unsupported post request” error.

Meta has limited a lot of Groups API access recently, so in many cases it just won’t work unless everything is approved.

Independent-Ant-7230•3 months ago•1

yeah this is mostly a permissions / API restriction thing, not your setup

meta has been tightening group access a lot, and for most apps you can’t post to groups via the normal graph API anymore, even if it’s public

those errors usually mean either the token doesn’t have the right scope or the endpoint just isn’t allowed for that object

only reliable way now is usually manual posting or using tools that are specifically approved for groups, and even those are limited

so yeah, you’re probably not doing anything wrong, it’s just meta closing that door

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