# 21730: System under maintenance. Please try again later.

Log Type: TWILIO

Log Level: ERROR

## Description

This error is returned by Twilio Systems when the system is going through a scheduled maintenance. During this maintenance window some of the operations are not allowed and this error is returned.

### Possible causes

Currently the system is going through some maintenance.

### Possible solutions

Try again later because once maintenance activity is completed all requests are processed successfully.