OCP now allows its users to connect WhatsApp numbers via Com bot. Com bot is a WABA service provider that provides on On-Premises as well as cloud API access to its users.
Visit https://www.com.bot/waba and create an account on Com bot. Sign up for the free trial by clicking on the “Start Now” button.
Email validation (verify your email with Com Bot)
A phone number which is not currently being used with whatsapp
Old Facebook Account (Used for Business Manager creation/connection)
From here follow the process and connect your WABA.
You don't need a verified business manager for the number to be live on with, however with unverified business managers, the outgoing messages limit is 250.
Once connected, you will have the option to attach your number to one of Com bot’s WABA services.
Once your WABA is connected in Com Bot. Click on the copy icon just beside the API Key.
Click on Cloud,
Copy the following details:
API URL
Bearer Token
WA Channel ID
Copy your number as well:
Click on On-Premise, copy the URL as well as the bearer code, and paste it into OCP as described above. Under WA Channel ID, copy the bearer token and then click on “Add” to add your number using On-Premise API.