Microsoft Teams did not receive messages from VMware Aria Operations for Logs 8.18, after click "TEST ALERT" from Webhook configuration.
VMware Aria Operations for Logs 8.18
The default Webhook Payload was not accepted by Microsoft Teams.
Change the default Webhook Payload such as following:
{
"text": "alert name - ${AlertName},
logs - ${messagesString}"
}
About how to Configure a Webhook Payload, ref: