# 52148: Expired APNs provider token used

Log Level: ERROR

## Description

### Possible causes

* The APNs provider token has been in the cache for too long
* The APNs provider token is generated incorrectly

### Possible solutions

* Verify that your Webhook Credential is configured correctly
* Verify that your token endpoint is configured correctly
* If the problem persists, please contact [customer support](https://www.twilio.com/help/contact).