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

# WhatsApp Business API - Unsupported Messages

The reason why business might receive a empty message from user

Please note that, This is a list of message formats that WhatsApp doesn't support.

| Unsupported format                                                    | Description                                                              | Example                          |
| --------------------------------------------------------------------- | ------------------------------------------------------------------------ | -------------------------------- |
| **Document file along with caption** *ex. pdf, ppt, docs, csv, etc.,* | When a contact / customer sends you a document file along with a caption | ![](/files/qiOTr1Jl9iYJMzsjGV86) |