Checklist for Connecting WhatsApp Business API 1. You must have a website. At minimum, a one-page landing page that clearly shows what your company does. The website footer must include the legal entity name and registration number ( check example).   2. Your Business Manager must have all company information fully completed. 3. Not required, but it is recommended to verify your website domain. Brand safety and suitability => Domains => Add These simple steps will help you connect your number to the WhatsApp Business API without encountering any difficulties during the setup process.