# Reaction messages | Developer Documentation

<div id="bkmrk-reaction-messagesupd">## Reaction messages

<div><span>Updated: Nov 3, 2025</span></div><div>Reaction messages are emoji-reactions that you can apply to a previous WhatsApp user message that you have received.</div><div>![](https://support2.chatarchitect.com/uploads/images/gallery/2026-04/embedded-image-asihux1p.png)</div><div id="bkmrk-limitations"><div id="bkmrk-limitations-1"><div>### Limitations

</div></div></div><div>When sending a reaction message, only a [sent message webhook](/books/meta-whatsapp/page/status-messages-webhook-reference-developer-documentation) (`status` set to `sent`) will be triggered; delivered and read message webhooks will not be triggered.</div><div id="bkmrk-request-parameters"><div id="bkmrk-request-parameters-1"><div>### Request parameters

</div></div></div><div><table><thead><tr><th><span>Placeholder </span></th><th><span>Description </span></th><th><span>Example Value </span></th></tr></thead><tbody><tr><td><div><div>`<ACCESS_TOKEN>`</div><div>*String*</div></div></td><td><div><div>**Required.**</div><div>[System token](/books/meta-whatsapp/page/access-tokens-guide-developer-documentation) or [business token](/books/meta-whatsapp/page/access-tokens-guide-developer-documentation).</div></div></td><td><div><div>```
EAAAN6tcBzAUBOZC82CW7iR2LiaZBwUHS4Y7FDtQxRUPy1PHZClDGZBZCgWdrTisgMjpFKiZAi1FBBQNO2IqZBAzdZAA16lmUs0XgRcCf6z1LLxQCgLXDEpg80d41UZBt1FKJZCqJFcTYXJvSMeHLvOdZwFyZBrV9ZPHZASSqxDZBUZASyFdzjiy2A1sippEsF4DVV5W2IlkOSr2LrMLuYoNMYBy8xQczzOKDOMccqHEZD
```

</div></div></td></tr><tr><td><div><div>`<API_VERSION>`</div><div>*String*</div></div></td><td><div><div>**Optional.**</div><div>Graph API version.</div></div></td><td><div><div>v25.0</div></div></td></tr><tr><td><div><div>`<EMOJI>`</div><div>*String*</div></div></td><td><div><div>**Required.**</div><div>Unicode escape sequence of the emoji, or the emoji itself, to apply to the user message.</div></div></td><td><div><div>Unicode escape sequence example:</div><div>`\uD83D\uDE00`</div><div>Emoji example:</div><div>??</div></div></td></tr><tr><td><div><div>`<WHATSAPP_MESSAGE_ID>`</div><div>*String*</div></div></td><td><div><div>**Required.**</div><div>WhatsApp message ID of message you want to apply the emoji to.</div><div>If the message you are reacting to is more than 30 days old, doesn't correspond to any message in the chat thread, has been deleted, or is itself a reaction message, the reaction message will not be delivered and you will receive a **messages** webhook with error code `131009`.</div></div></td><td><div><div>`wamid.HBgLMTY0NjcwNDM1OTUVAgASGBQzQUZCMTY0MDc2MUYwNzBDNTY5MAA=`</div></div></td></tr><tr><td><div><div>`<WHATSAPP_BUSINESS_PHONE_NUMBER_ID>`</div><div>*String*</div></div></td><td><div><div>**Required.**</div><div>WhatsApp business phone number ID.</div></div></td><td><div><div>`106540352242922`</div></div></td></tr><tr><td><div><div>`<WHATSAPP_USER_PHONE_NUMBER>`</div><div>*String*</div></div></td><td><div><div>**Required.**</div><div>WhatsApp user phone number.</div></div></td><td><div><div>`+16505551234`</div></div></td></tr></tbody></table>

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