Intro

WhatsApp Business API unlocks a wide range of possibilities for businesses.

Limitations of WhatsApp Business APIs:

If onboarded with a WhatsApp Business API solution provider (like ChatDaddy), the previous chats cannot be seen
If onboarded with a WhatsApp Business API solution provider (like ChatDaddy), the number cannot be used on any other WhatsApp apps - including the WhatsApp & WhatsApp Business mobile app.

A WABA can have a maximum of 250 message templates.
Meta Business Accounts are initially limited to 2 registered business phone numbers, but this limit can be increased to up to 20.
A WABA must belong to only one Business Manager. You cannot have two or more Business Managers owning one WABA.
Businesses can send messages by manually typing to customers only after a customer initiates a message. These messages are called session messages and can be sent by businesses to customers within 24 hours.
After 24 hours, the session expires and businesses can only send 'template messages' to their users. Template messages must be pre-approved by WhatsApp and can be done from the ChatDaddy dashboard
All template messages must adhere to WhatsApp Commerce Policies.
The WhatsApp Group Feature is not supported
WhatsApp Voice or Video Calls are not supported. Voice notes are supported.
The WhatsApp Message Forwarding Feature is not supported
WhatsApp apps cannot be used with the same number if using WhatsApp Business APIs
WhatsApp Messages cannot be replied to in a thread