---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/91302#article
headline: "91302: Delivery throttled"
url: https://www.twilio.com/docs/api/errors/91302
inLanguage: en
dateModified: 2026-11-04T19:15:20.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 91302: Delivery throttled

Log Type: APPLICATION

Log Level: WARNING

## Description

Twilio records this error when Data Destinations temporarily reduces event delivery throughput to a targeted destination. Throttling occurs when the destination endpoint enforces rate limits or returns a high volume of failure responses.

Throttling allows the target destination time to recover or operate within its capacity limits. Twilio automatically retries throttled events; no immediate action is required unless throttling is sustained.

### Possible causes

* The destination is repeatedly returning 429 or 5xx responses.
* The destination is experiencing slow response times, causing delivery backpressure.
* A sudden increase in event volume is exceeding the destination endpoint's capacity limits.

### Possible solutions

* Reduce processing overhead on your destination so it can return a fast 2xx response.
* Confirm that your destination is not configured to rate-limit Twilio's delivery requests.
* If throttling persists during volume spikes, evaluate your event subscription to ensure you are only streaming necessary event types to the destination.
* Increase the capacity or concurrency handling of the destination.

#### Additional resources

* [Data Destinations overview](/docs/data-destinations)
* [Create a destination](/docs/data-destinations/api-quickstart#create-a-destination)
* [Create a subscription](/docs/data-destinations/api-quickstart#create-a-subscription)