Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
txn_id | string | Yes | Session ID for file upload |
action | string | No | Upload action: ekascribe-v2 |
Response
HTTP Status Codes
| Code | Description |
|---|---|
| 200 | Presigned URL generated successfully |
| 204 | File uploaded successfully |
| 403 | Upload failed (expired policy) |

