> For the complete documentation index, see [llms.txt](https://docs.innopaas.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.innopaas.com/api-reference/api-reference-en/whatsapp-business-api.md).

# WhatsApp Business API

- [WhatsApp Business API](https://docs.innopaas.com/api-reference/api-reference-en/whatsapp-business-api/whatsapp-business-api.md): The InnoPaaS platform provides enterprise customers with integration and sending support for Meta WhatsApp messages, and offers unified API interface technical support. The unified data encoding format of this protocol is UTF-8. The interface uses HTTPS, and the TLS protocol version is >=1.2. User authentication uses Authorization in the request header; see 2.1 Common Request Headers for details.
- [Message](https://docs.innopaas.com/api-reference/api-reference-en/whatsapp-business-api/whatsapp-business-api/message.md)
- [Template](https://docs.innopaas.com/api-reference/api-reference-en/whatsapp-business-api/whatsapp-business-api/template.md)
- [File Upload](https://docs.innopaas.com/api-reference/api-reference-en/whatsapp-business-api/whatsapp-business-api/file-upload.md)
- [Number Query](https://docs.innopaas.com/api-reference/api-reference-en/whatsapp-business-api/whatsapp-business-api/number-query.md)
- [Webhook](https://docs.innopaas.com/api-reference/api-reference-en/whatsapp-business-api/webhook.md)
- [Configure Webhook](https://docs.innopaas.com/api-reference/api-reference-en/whatsapp-business-api/webhook/configure-webhook.md): When there are message updates in Waba, update events will be pushed to customers through Webhook. These include message status updates, user reply messages, Waba account review status updates, WhatsApp template status updates, sender number display name changes, etc.
- [Message Status](https://docs.innopaas.com/api-reference/api-reference-en/whatsapp-business-api/webhook/message-status.md)
- [Inbound Message](https://docs.innopaas.com/api-reference/api-reference-en/whatsapp-business-api/webhook/inbound-message.md)
- [Template Status](https://docs.innopaas.com/api-reference/api-reference-en/whatsapp-business-api/webhook/template-status.md)
- [Inbox Chat Message Events](https://docs.innopaas.com/api-reference/api-reference-en/whatsapp-business-api/webhook/inbox-chat-message-events.md): Chatroom inbound and outbound messages only listen for message events in the chatroom
- [Number Quality Status](https://docs.innopaas.com/api-reference/api-reference-en/whatsapp-business-api/webhook/number-quality-status.md)
- [Number Name Update](https://docs.innopaas.com/api-reference/api-reference-en/whatsapp-business-api/webhook/number-name-update.md)
- [Error Code](https://docs.innopaas.com/api-reference/api-reference-en/whatsapp-business-api/error-code.md)
- [Custom Error Codes](https://docs.innopaas.com/api-reference/api-reference-en/whatsapp-business-api/error-code/custom-error-codes.md)
- [Meta Error Codes](https://docs.innopaas.com/api-reference/api-reference-en/whatsapp-business-api/error-code/meta-error-codes.md)
- [Language Code](https://docs.innopaas.com/api-reference/api-reference-en/whatsapp-business-api/language-code.md)


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