WhatsApp Error #200: You Do Not Have Permission to Send Messages

Fix the WhatsApp Business API error '(#200) You do not have the necessary permissions required to send messages on behalf of this WhatsApp Business Account' with solutions for both Coexistence and Non-Coexistence flows.

• What is WhatsApp Business API? The Complete Guide for 2026
• WhatsApp Business API Pricing in Singapore (2026 Guide)
• Understanding WhatsApp Business Messaging Limits
• WhatsApp 24h Rule Explained: How Businesses Can Message Customers Again
• WhatsApp Business API docs