---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/51002#article
headline: "51002: Client Connection: Request rate limit exceeded"
url: https://www.twilio.com/docs/api/errors/51002
inLanguage: en
dateModified: 2026-06-09T11:00:42.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 51002: Client Connection: Request rate limit exceeded

Log Level: ERROR

## Description

Twilio rejected the client connection request because your application exceeded the allowed request rate. This error usually appears when a client or group of clients sends connection or initialization requests too quickly.

### Possible causes

* Your application is repeatedly creating new client connections in a short period of time.
* A reconnect loop is causing clients to retry immediately after a failed or interrupted connection.
* Multiple browser tabs, devices, or sessions are connecting at the same time for the same user or account.
* A deployment issue or client-side bug is generating unexpected traffic spikes.
* Load testing or scripted traffic exceeded the default request rate for client connections.

### Possible solutions

* Review your client connection logic and reduce how often your application creates new connections.
* Add retry backoff so clients do not reconnect immediately and repeatedly after a connection failure.
* Reuse existing sessions where possible instead of creating a new client connection for every action or page load.
* Check for duplicate initialization in your application, especially in browser refresh flows, mobile app lifecycle events, or background retries.
* Confirm that the increased request volume is expected and not caused by a bug or runaway process.
* If the traffic pattern is valid and you need a higher limit, contact Support through the Help Center.

#### Additional resources

* [Twilio Chat documentation](/docs/chat)
* [Twilio Sync documentation](/docs/sync)