> ## Documentation Index
> Fetch the complete documentation index at: https://hedera-0c6e0218-mintlify-bc559771.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# FileID

> FileID is the Hedera protobuf identifier for a stored file, expressed as a shard, realm, and file number triplet used by the file service.

The ID for a file

| Field      | Description                                       |
| ---------- | ------------------------------------------------- |
| `shardNum` | The shard number (nonnegative)                    |
| `realmNum` | The realm number (nonnegative)                    |
| `fileNum`  | A nonnegative File number unique within its realm |

####