# onUserReceivedInvitation is not calling in GroupChannelHandler

**URL:** <https://community.sendbird.com/t/onuserreceivedinvitation-is-not-calling-in-groupchannelhandler/8487>\
**Category:** Android\
**Tags:** group-channel, sendbird-call, chatsdk\
**Created:** [October 25, 2023, 6:22am UTC](https://community.sendbird.com/t/onuserreceivedinvitation-is-not-calling-in-groupchannelhandler/8487 "2023-10-25T06:22:50Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Nadir\_Kunbhar](https://sea2.discourse-cdn.com/flex020/user_avatar/community.sendbird.com/nadir_kunbhar/32/4643_2.png) [@Nadir\_Kunbhar](https://community.sendbird.com/u/Nadir_Kunbhar)\
**Post date:** [October 25, 2023, 6:22am UTC](https://community.sendbird.com/t/onuserreceivedinvitation-is-not-calling-in-groupchannelhandler/8487/1 "2023-10-25T06:22:50Z")

</div>

onUserReceivedInvitation,  
onUserJoined ,  
onUserLeft  
functions are not invoked/called in GroupChannelHandler, but others functions are calling like

onMessageReceived  
onTypingStatusUpdated

---

<div class="post-metadata">

**Author:** ![Chinmaya\_Gupta](https://sea2.discourse-cdn.com/flex020/user_avatar/community.sendbird.com/chinmaya_gupta/32/1021_2.png) [@Chinmaya\_Gupta](https://community.sendbird.com/u/Chinmaya_Gupta)\
**Post date:** [October 26, 2023, 10:46am UTC](https://community.sendbird.com/t/onuserreceivedinvitation-is-not-calling-in-groupchannelhandler/8487/2 "2023-10-26T10:46:18Z")

</div>

Hello @Nadir_Kunbhar

Please ensure that you have properly registered the `GroupChannelHandler` and set it as the event handler for group channel events. Additionally, make sure that you have initialized the SendBird SDK and connected to the server before attempting to receive these events.

If you have already implemented this correctly and the methods are still not being called, please provide more details about your implementation, including any relevant code snippets, so that I can assist you further.