There are a number of possible reasons why a FriendTalk message is not delivered to a KakaoTalk user and/or returns an error:
- The user has not added the channel as friends. FriendTalk messages can only be sent to user who has added the channel as friends. To be a friend of a KakaoTalk channel, go to the Channel tab and click the Add Channel button to the right of the KakaoTalk channel name:
![FAQ message-non-delivery issues.png FAQ message-non-delivery issues.png](https://community.sinch.com/t5/image/serverpage/image-id/1568iD85AEA0AD3894B42/image-size/medium?v=v2&px=400)
- The user has not used KakaoTalk for a while.
- The user has deactivated KakaoTalk push messages.
- The user does not have the minimum KakaoTalk version or unsupported device.
- The message was sent after 9PM and before 8AM Korean time.