I have a Whatsapp Business Account (using the mobile app). I want to enable catalogs on it and update them via the API. I have tried digging into all the different documentation for a way to do this.

First method was through the API which you can see below. When that didn't work, I tried using the Business platforms and that didn't work either:

API METHOD

GET graph.facebook.com/v21.0/425388770656303?fields=product_catalogs

{
  "error": {
    "message": "(#10) This operation can not be performed on SMB business type",
    "type": "OAuthException",
    "code": 10,
    "fbtrace_id": "AJVImA99QLbxqYn5Yw47m61"
  }
}

1. What are my options here? Do I need to upgrade my account? Where can I find more information about this.
2. Is there a way to create/modify/delete catalog items on my Whatsapp Business account via API at all?

BUSINESS PLATFORM METHOD

The steps I took:

1. I added my Whatsapp Business Account within my Business Settings (business.facebook.com)
2. I then went to the Whatsapp Manager. There I do not find my account.

Why does my Whatsapp Business Account not show up under Whatsapp Manager?

Please help.