---
page_type: error
code: 35134
message: "35134: `Messages` array contains duplicate `To` numbers."
level: ERROR
product: Programmable Messaging
---

## Description

`Messages` array contains duplicate `To` numbers. Please check the list for duplicates

### Possible Causes

The provided `Messages` array has one or more duplicate `To` numbers

### Possible Solutions

Check the `Messages` array and remove `To` number duplicates if any