# 30128: MessagingServiceSidsAction is invalid

Log Type: APPLICATION

Log Level: ERROR

## Description

This error occurs when `MessagingServiceSidAction` uses an unsupported value. Use only `ADD`, `DELETE`, or `REPLACE`.

### Possible causes

* The request includes a `MessagingServiceSidAction` value that is not `ADD`, `DELETE`, or `REPLACE`.

### Possible solutions

* Update `MessagingServiceSidAction` to a supported value: `ADD`, `DELETE`, or `REPLACE`.
* Check the request payload for typos or an unexpected action value before you send the request.

#### Additional resources

* [Services resource](/docs/messaging/api/service-resource)
* [Messaging Services](/docs/messaging/services)