When attempting to publish your campaign to a Facebook Page the following error is displayed in the console:
Publishing error. The experience failed to publish to destination , an error occurred adding App [custom] to the FB fan page: (#2069016) This page does not have permission to install custom tab
This error will now occur when you try to publish an experience to a Facebook Page that has less than 2000 likes. This is a Facebook imposed requirement.
The change came into affect February 7th and applies to all Facebook Fanpages.