Create a template on the official API
The model is created in Meta's manager. After approval it lands on the platform.
- Open https://business.facebook.com/wa/manage/message-templates/.
- Top right, pick the number for the template.
- Click Create template.
- Category (Marketing, Utility or Authentication), name and language.
- Build the header (text or media) and the Body. Preview sits on the right.
- Fill Footer if needed and add buttons, including Visit website.
- Click Submit. Meta may flag an error; ignore or fix it.
- Confirm languages with Continue.
- Wait for Meta approval before using it.