---
title: "POST /multicast-groups/{Id}/data"
method: POST
path: "/multicast-groups/{Id}/data"
---

# POST /multicast-groups/{Id}/data

`POST /multicast-groups/{Id}/data`

Sends the specified data to a multicast group.

## Path parameters

- `Id` string, required — The ID of the multicast group.

## Request body

- object
  - `PayloadData` string, required — The binary to be sent to the end device, encoded in base64.
  - `WirelessMetadata` object, required — Wireless metadata that is to be sent to multicast group.
    - `LoRaWAN` LoRaWANMulticastMetadata — The metadata information of the LoRaWAN multicast group.
      - `FPort` integer — The Fport value.

## Response `201`

Success

- SendDataToMulticastGroupResponse
  - `MessageId` string — ID of a multicast group message.

## Other responses

- `480` — ValidationException
- `481` — ResourceNotFoundException
- `482` — AccessDeniedException
- `483` — ConflictException
- `484` — InternalServerException
- `485` — ThrottlingException

---

[API](https://skmtc.net/aws/apis/iotwireless.md) · [All operations](https://skmtc.net/aws/apis/iotwireless/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/aws/iotwireless/revisions/022d242d4bce/schema)