The workspace is being migrated between servers
{
"type": "team_migration_started",
}
The team_migration_started event is sent when a Slack workspace is about to be
migrated between servers. The websocket connection will close immediately after it is sent.
Occasionally we need to move Slack workspaces to a new server. To avoid any data synchronization bugs or race conditions we disconnect all clients from a workspace before starting this process. By the time a client has reconnected the process is usually complete, so the impact is minimal.
When clients receive this event, immediately start a reconnection
process by calling rtm.start again. You may
receive occasional migration_in_progress errors when re-calling rtm.start. If this happens you should wait a few seconds and try again. If the error continues you should wait longer before retrying, and so on.
When an event occurs, we will send an HTTP POST request to your Request URL. The outer payload is uniform across all Events API methods, and contains fields like team_id and event. Learn more