DashboardLogs
Errors
Authentication failures, API errors, and ACL denials
The Errors tab consolidates all error events across your organization into one view.
Error Categories
Use the filter dropdown to view specific error types:
Authentication Failures
Failed MQTT login attempts with reason badges:
| Reason | Description |
|---|---|
| Invalid credentials | Wrong password for the given username |
| Missing credentials | Connection attempt without username or password |
| Username format | Username doesn't match the required user@org_short_id format |
| Protocol version not allowed | Client is using an MQTT version disabled in Settings → MQTT |
API Errors
HTTP error responses from the CloudSignal API, including:
- 4xx client errors (bad requests, unauthorized, rate limited)
- 5xx server errors
ACL Denials
Access control rejections showing:
- Action: Publish or Subscribe
- Topic: The topic that was denied
- Reason: Which ACL rule caused the denial
ACL denials only appear after you've configured at least one ACL rule. Without rules, all access is permitted by default.