# 99002: Tool Execution Error

Log Type: APPLICATION

Log Level: ERROR

## Description

Tool execution responded with non 2xx status code.

### Possible causes

Tool execution could not be completed due to non 2xx response.

### Possible solutions

Check the status code and error logs in your Tool.

* If you are using Twilio Functions, try adding more `console.logs`, setting Live Logs on the Function, and executing your Assistants again.
* If you are getting 401/403, verify you are handling the X-Twilio-Signature correctly.
* If you are getting 5xx, check your server logs.