---
page_type: error
code: 57008
message: "57008: 'EventType' format must be String"
level: ERROR
product: Programmable SMS
---

## Description

Specified 'EventType' format must be String

### Possible Causes

Specified 'EventType' format is invalid, String required

### Possible Solutions

Confirm a valid 'EventType' is being passed in request.