# SBSMChannelCollectionDelegate when receiving a new message triggers twice the .update event

**URL:** <https://community.sendbird.com/t/sbsmchannelcollectiondelegate-when-receiving-a-new-message-triggers-twice-the-update-event/427>\
**Category:** Sendbird Chat API/SDK\
**Tags:** syncmanager, group-channel, chatsdk\
**Created:** [June 15, 2020, 9:43pm UTC](https://community.sendbird.com/t/sbsmchannelcollectiondelegate-when-receiving-a-new-message-triggers-twice-the-update-event/427 "2020-06-15T21:43:05Z")\
**Posts on this page:** 1\
**Showing post:** 30

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**Author:** ![Woo](https://sea2.discourse-cdn.com/flex020/user_avatar/community.sendbird.com/woo/32/125_2.png) [@Woo](https://community.sendbird.com/u/Woo)\
**Post date:** [June 30, 2020, 5:46pm UTC](https://community.sendbird.com/t/sbsmchannelcollectiondelegate-when-receiving-a-new-message-triggers-twice-the-update-event/427/30 "2020-06-30T17:46:36Z")

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Are you sure both simulators running on latest SDK?

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_[View the full topic](https://community.sendbird.com/t/sbsmchannelcollectiondelegate-when-receiving-a-new-message-triggers-twice-the-update-event/427)._