> ## Documentation Index
> Fetch the complete documentation index at: https://docutrack-docs.icpitalia.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Upload a Document

> Inter-canister Flows

```mermaid theme={null}
sequenceDiagram
    actor A as Alice
    participant UC as Alice's User Canister
    A->>UC: upload_file_atomic
    A->>UC: Upload file chunks

```