The Retell Community is where innovators, call center leaders, and AI enthusiasts come together to share ideas, learn best practices, and explore the future of voice automation. Join to connect with peers, get early access to product updates, and collaborate on building human-like AI voice experiences that transform customer service.

Retell AI

<@1145576664366055464> what error code can this throw and in what cases?

await retell.phoneNumber.retrieve(phone);

Thanks for tagging me <@523453737931374602>. I'll look through relevant sources and get back to you shortly.

### Answer
 The `client.phoneNumber.retrieve() ` method can throw the following error codes: [(1) ](<https://docs.retellai.com/api-references/get-phone-number>)

| Error Code | Case |
|------------|------|
| **400** | Bad request (e.g., malformed input) |
| **401** | Authentication failure (invalid or missing API key) |
| **422** | Unprocessable entity (e.g., validation errors) |
| **500** | Internal server error |

The phone number parameter should be in E.164 format (e.g., `+14157774444`) .

​
To learn more, see the sources I considered:

[[1] Get Phone Number](https://docs.retellai.com/api-references/get-phone-number)
​

Feel free to tag <@1145576664366055464> with additional questions. I also appreciate feedback, it helps me improve.

Thanks for the follow-up, <@523453737931374602>. I'll get back to you soon.

### Answer
 

Hey! How can I help you with Retell AI?