Managed application botService channel, CHANNEL_NOT_SUPPORTED error - azure

Question

I'm working on managed application that should contain a bot for the teams application.
At the moment the bot resources look like this:
{
"type": "Microsoft.BotService/botServices",
"name": "[concat(parameters('webAppName'), '-bs')]",
"kind": "azurebot",
"apiVersion": "2022-06-15-preview",
"location": "global",
"sku": {
"name": "F0"
},
"dependsOn": [
"[resourceId('Microsoft.ManagedIdentity/userAssignedIdentities', variables('userAssignedIdentityName'))]",
"[resourceId('Microsoft.Web/sites', variables('webAppName'))]"
],
"properties": {
"displayName": "[parameters('webAppName')]",
"msaAppType": "MultiTenant",
"msaAppId": "[reference(resourceId('Microsoft.ManagedIdentity/userAssignedIdentities', variables('userAssignedIdentityName')), '2018-11-30').clientId]",
"endpoint": "[concat('https://', parameters('webAppName'), '.azurewebsites.net', '/api/v1/messages')]"
}
},
{
"type": "Microsoft.BotService/botServices/channels",
"apiVersion": "2022-06-15-preview",
"name": "[concat(parameters('webAppName'), '-bs/', '-tc')]",
"location": "global",
"sku": {
"name": "F0"
},
"kind": "azurebot",
"properties": {
"channelName": "MsTeamsChannel",
"properties": {
"isEnabled": true
}
},
"dependsOn": [
"[resourceId('Microsoft.BotService/botServices', concat(parameters('webAppName'), '-bs'))]"
]
}
The Microsoft.BotService/botServices/channels part is causing the issue:
{
"status": "Failed",
"error": {
"code": "ApplianceDeploymentFailed",
"message": "The operation to create appliance failed. Please check operations of deployment 'olwa11119' under resource group '/subscriptions/19...truncated...14/resourceGroups/mrg-test_managed_medx_app-previ-20220924201448'. Error message: 'At least one resource deployment operation failed. Please list deployment operations for details. Please see https://aka.ms/DeployOperations for usage details.'",
"details": [
{
"code": "BadRequest",
"message": "{\r\n \"error\": {\r\n \"code\": \"CHANNEL_NOT_SUPPORTED\",\r\n \"message\": \"Channel is not supported\"\r\n }\r\n}"
}
]
}
}
Any tips how can i fix this? Thanks in advance.

Answer 1

Eventually with the million tries and fails i have found out what's wrong with the template. To fix this you have to change the "name" of the "Microsoft.BotService/botServices/channels" to "MsTeamsChannel", same as "channelName" in "properties".
It's not documented anywhere, even more, documentation is extremely misleading:
string (required)
Character limit: 2-64
Valid characters:
Alphanumerics, underscores, periods, and hyphens.
Start with alphanumeric.
So my working template now looks like this:
{
"type": "Microsoft.BotService/botServices/channels",
"apiVersion": "2022-06-15-preview",
"name": "[concat(parameters('webAppName'), '-bs', '/', 'MsTeamsChannel')]",
"location": "global",
"sku": {
"name": "F0"
},
"kind": "azurebot",
"properties": {
"channelName": "MsTeamsChannel",
"properties": {
"isEnabled": true,
"acceptedTerms": true
}
},
"dependsOn": [
"[resourceId('Microsoft.BotService/botServices', concat(parameters('webAppName'), '-bs'))]"
]
}
Hope this is going to save lots of time to someone.