As per Facebook's Developer Platform Policy, developers are forbidden from pre-filling the user message parameter with any content the user didn't enter themselves.
Pre-fill the user message parameter with any content the user didn't enter themselves, even if they can edit or delete that content before sharing. This applies to posts, comments, photo captions, and photo album captions.
Fortunately, we can suggest content that you can manually copy and paste into the content parameter and SocialHP provides a quick and easy way to do that.
Your app can suggest content, but the person using your app should choose to manually copy and paste or type that content themselves.
Manual Copy and Paste
