Error: Provide valid app ID [403] while creating facebook marketing api custom app

Hello,
I am creating a custom app for facebook marketing api. I am able to get access token from facebook using custom app but when I am sending any get request such as getCampaign it throws an runtime error.

RuntimeError

[403] {“error”:{“message”:“(#200) Provide valid app ID”,“type”:“OAuthException”,“code”:200,“fbtrace_id”:“AQWYnJpCORPHZst2ZgWisaa”}}

Thanks for your help!

@Ashwani_Madhukar; how are you sending the app ID now?

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