# Group messages webhook reference | Developer Documentation

<div id="bkmrk-group-messages-webho">## Group messages webhook reference

<div><span>Updated: Nov 10, 2025</span></div><div>This reference describes trigger events and payload contents for the WhatsApp Business Account **messages** webhook for messages that are sent to a group, or received from a group.</div><div id="bkmrk-triggers"><div id="bkmrk-triggers-1"><div>### Triggers

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<span>A WhatsApp user or a business sends a message to a group.</span><span>A WhatsApp user or a business receives a message within a group.</span><div id="bkmrk-parameters"><div id="bkmrk-parameters-1"><div>### 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>`<BUSINESS_DISPLAY_PHONE_NUMBER>`</div><div>*String*</div></div></td><td><div><div>Business display phone number.</div></div></td><td><div><div>`15550783881`</div></div></td></tr><tr><td><div><div>`<BUSINESS_PHONE_NUMBER_ID>`</div><div>*String*</div></div></td><td><div><div>Business phone number ID.</div></div></td><td><div><div>`106540352242922`</div></div></td></tr><tr><td><div><div>`<GROUP_ID>`</div><div>*String*</div></div></td><td><div><div>The string identifier of a group made using the Groups API.</div><div>This field shows when messages are sent, received, or read from a group.</div><div>[Learn more about the Groups API](/books/meta-whatsapp/page/groups-api-developer-documentation)</div></div></td><td><div><div>`"Y2FwaV9ncm91cDoxNzA1NTU1MDEzOToxMjAzNjM0MDQ2OTQyMzM4MjAZD"`</div></div></td></tr><tr><td><div><div>`<IDENTITY_KEY_HASH>`</div><div>*String*</div></div></td><td><div><div>Identity key hash. Only included if you have enabled the [identity change check](/books/meta-whatsapp/page/business-phone-numbers-developer-documentation) feature.</div></div></td><td><div><div>`DF2lS5v2W6x=`</div></div></td></tr><tr><td><div><div>`<MESSAGE_TEXT_BODY>`</div><div>*String*</div></div></td><td><div><div>Text body of the message.</div></div></td><td><div><div>`What do you all think about this?`</div></div></td></tr><tr><td><div><div>`<MESSAGE_TYPE>`</div><div>*String*</div></div></td><td><div><div>The type of message being sent. Will change depending on the message sent to the group.</div><div>Currently, the Groups API supports:</div>
<span>Text</span><span>Media</span><span>Text-based templates</span><span>Media-based templates</span></div></td><td><div><div>`text`</div></div></td></tr><tr><td><div><div>`<WHATSAPP_BUSINESS_ACCOUNT_ID>`</div><div>*String*</div></div></td><td><div><div>WhatsApp Business Account ID.</div></div></td><td><div><div>`102290129340398`</div></div></td></tr><tr><td><div><div>`<WHATSAPP_MESSAGE_ID>`</div><div>*String*</div></div></td><td><div><div>WhatsApp message ID.</div></div></td><td><div><div>`wamid.HBgLMTY1MDM4Nzk0MzkVAgASGBQzQUFERjg0NDEzNDdFODU3MUMxMAA=`</div></div></td></tr><tr><td><div><div>`<WEBHOOK_TRIGGER_TIMESTAMP>`</div><div>*String*</div></div></td><td><div><div>Unix timestamp indicating when the webhook was triggered.</div></div></td><td><div><div>`1739321024`</div></div></td></tr><tr><td><div><div>`<WHATSAPP_USER_PHONE_NUMBER>`</div><div>*String*</div></div></td><td><div><div>WhatsApp user phone number. This is the same value returned by the API as the `input` value when sending a message to a WhatsApp user. Note that a WhatsApp user's phone number and ID may not always match.</div></div></td><td><div><div>`+16505551234`</div></div></td></tr><tr><td><div><div>`<WHATSAPP_USER_PROFILE_NAME>`</div><div>*String*</div></div></td><td><div><div>WhatsApp user's name as it appears in their profile in the WhatsApp client.</div></div></td><td><div><div>`Sheena Nelson`</div></div></td></tr><tr><td><div><div>`<WHATSAPP_USER_ID>`</div><div>*String*</div></div></td><td><div><div>WhatsApp user ID. Note that a WhatsApp user's ID and phone number may not always match.</div></div></td><td><div><div>`16505551234`</div></div></td></tr></tbody></table>

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