# 50063: Programmable Chat: Actions per second limit exceeded

Log Level: ERROR

## Description

### Possible causes

* Your application is generating too many actions per second (APS) for Chat service instance
* Note that the APS limit is enforced for commands such as sending a Message or creating a Channel - not Read actions

### Possible solutions

* Make sure your application (client or backend) uses a good exponential back-off algorithm like the [one advocated by Amazon](https://www.awsarchitectureblog.com/2015/03/backoff.html) to retry on HTTP 429 (rate limiting) responses
* Reduce the rate of requests and introduce basic rate control, e.g. for user or channel provisioning use-cases
* Reduce number of concurrent requests