messenger_media_delivery_get

publ Reference
# messenger_media_delivery_get

Read a direct or basic group room of the Messenger app (pApp D00003) before sending an uploaded image or attachment (a completed messenger_media_upload_apply task) or an encoded video (a completed messenger_media_encode_apply task): the recipient count, the media and your author profile. Returns a revision. Sends nothing.

## Inputs

| Field | Required here | Contract |
| --- | --- | --- |
| `target` | Yes | object |
| `target.roomUuid` | Yes | string; pattern `^[A-Za-z0-9_-]{1,200}$` |
| `target.roomType` | Yes | `DIRECT`, `GROUP` |
| `target.messageType` | Yes | `IMAGE`, `ATTACHMENT`, `VIDEO`, `RECORD` |
| `target.mediaTaskId` | Yes | string; pattern `^[A-Za-z0-9_-]{8,80}$` |