title: How to create system user under facebook business account without creating any APp for client business
body: <p>I have to create system user under client business manager but without creating any app through graph php api. My scenario is such way - I want to access client business account as a partner to create ad campaigns. I found one way from facebook developer documentation that create business on behalf relationship. But after followed few step it require client system token &amp; for creating that token it asking app first. But why client will create app to only for system token?</p>
  <p>Pls help to get solution for this. Your help is highly appreciated!</p>