I am trying to do ad for messenger_sponsored_message in fb but getting error like this:
Ads creative post was created by an app that is in development mode. It must be in public to create this ad.
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Alex Sergeenko
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Jay Suchak
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["The work-around is simply to create a dummy app and set it publicly visible."](https://stackoverflow.com/questions/32213613/creating-a-facebook-ad-creative-from-an-app-in-development-mode) This means that you need to go to your app dashboard (https://developers.facebook.com/apps), select the App that you are working on and set to public (there is a toggle button on top-right set on Off. You need to turn it On). – Fabrizio Anichini May 23 '19 at 06:56