---
title: "Message Interface"
url: https://develop.sentry.dev/sdk/foundations/transport/event-payloads/message/
---

# Message Interface

The Message Interface carries a log message that describes an event or error. Optionally, it can carry a format string and structured parameters. This can help to group similar messages into the same issue.

## [Attributes](https://develop.sentry.dev/sdk/foundations/transport/event-payloads/message.md#attributes)

* `formatted`

  **Required**. The fully formatted message. If missing, Sentry will try tointerpolate the message.

A limit of 8192 characters is exposed in Relay and longer messages will be truncated. SDKs should not enforce this limit. Sentry also accepts a message where this is not set to support legacy SDKs.

* `message`

  *Optional*. The raw message string (uninterpolated).

A limit of 8192 characters is exposed in Relay and longer messages will be truncated. SDKs should not enforce this limit.

* `params`

  *Optional*: A list of formatting parameters, preferably strings. Non-stringswill be coerced to strings.

## [Examples](https://develop.sentry.dev/sdk/foundations/transport/event-payloads/message.md#examples)

```json
{
  "logentry": {
    "message": "My raw message with interpreted strings like %s",
    "params": ["this"]
  }
}
```