Cannot send messages in other channels except General msbot for teams (nodejs) - botframework

Question

I have created a bot for teams and added it to a channel (testChannel1) as a tab (using a configuration page). I have received a ConversationUpdate event to my server. When I try to send message using the context object that I have received in ConversationUpdate event the message was sent in General channel instead of testChannel1. I have added my bot to testChannel1 but I dont know why the message is sent in General. I am also not able to get the channels list using that context object it is throwing error Error: This method is only valid within the scope of a MS Teams Team..
contextActivityObject :- {
"membersAdded": [
{
"id": "28:[guid]"
}
],
"type": "conversationUpdate",
"timestamp": "2020-04-24T12:00:06.7125247Z",
"id": "f:[guid]",
"channelId": "msteams",
"serviceUrl": "https://smba.trafficmanager.net/in/",
"from": {
"id": "29:[id]",
"aadObjectId": "[guid]"
},
"conversation": {
"isGroup": true,
"conversationType": "channel",
"tenantId": "[guid]",
"id": "19:aba[id]#thread.tacv2"
},
"recipient": {
"id": "28:[guid]",
"name": "teststandups"
},
"channelData": {
"team": {
"aadGroupId": "[guid]",
"name": "nikhilp",
"id": "19:aba[id]#thread.tacv2"
},
"eventType": "teamMemberAdded",
"tenant": {
"id": "[guid]"
}
}
}
The scope I have provided for my bot is Team
I would be thankful for any help

Answer 1

So you've asked a couple of questions, I'll try answer as best as possible. Basically, that Conversation ID (19:aba[id]#thread.tacv2) is unique per channel, so if you're using the "General" channel one, it will for sure go into General.
To find out how to get the channel Ids, have a look at Get the list of channels in a team. That will show you -how- to get the info, but you need to get a trigger in order to be able to make that call. To do that, the best way is to hook into one of the triggers, like receiving a message from a user, or being added to the team. Included in these set of events, are channels being added and deleted. See more here.