---
page_type: error
code: 52164
message: "52164: No Credentials found for the supplied Binding Type"
level: ERROR
product: Notifications
---

## Error - 52131

### Invalid APNs credentials

#### Possible Causes

- The Webhook Credential was configured for the wrong Binding Type
- Your token endpoint responded with the respective error code by mistake
- An internal Twilio error occurred

#### Possible Solutions

- Verify that your Webhook Credential is set up for the correct Binding Type
- Verify that your token endpoint is set up correctly