I would like to know whether it is possible to post on facebook group using facebook page with graph API or not.
I have been struggling finding solutions for this.
Pretty sure that that’s not currently possible.
https://developers.facebook.com/docs/graph-api/reference/v9.0/group/feed#publish says the requirements include that a user access token is used, and that the permission publish_to_groups must be granted, and the description of that permission also uses phrasing that indicates pretty clearly, that this is supposed to be used to publish as a user, not a page. https://developers.facebook.com/docs/permissions/reference/publish_to_groups
publish_to_groups
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