How to solve Facebook Group Post Error: Permissions Error #200 ZigmaSocial?
Sometimes, you will receive the Facebook Permissions Error 200 when attempting to post to your Facebook Group or Page. There are several different messages, but the recommended course of action is the same to fix this error – re-authorization of your Facebook permissions.
This is usually because you have not granted the app full permission to publish to your Group or Page.
To can post to groups you are admin. You need to be installed App on your Groups.