---
page_type: error
code: 52137
message: "52137: Invalid size of subject in APNs certificate"
level: ERROR
product: Notifications
---

## Error - 52137

### Invalid size of subject in APNs certificate

#### Possible Causes

- The subject of APNs certificate is of invalid size.

#### Possible Solutions

- The subject of the APNs certificate is the bundle ID of your application. Make sure you have a valid bundle ID defined when generating the certificate signing request.