> ## Documentation Index
> Fetch the complete documentation index at: https://baileys.wiki/llms.txt
> Use this file to discover all available pages before exploring further.

# IHistorySyncNotification

> Protobuf interface IHistorySyncNotification generated from WAProto.

Defined in: [WAProto/index.d.ts:6574](https://github.com/WhiskeySockets/Baileys/blob/master/WAProto/index.d.ts#L6574)

## Properties

### chunkOrder?

> `optional` **chunkOrder**: `null` | `number`

Defined in: [WAProto/index.d.ts:6581](https://github.com/WhiskeySockets/Baileys/blob/master/WAProto/index.d.ts#L6581)

***

### directPath?

> `optional` **directPath**: `null` | `string`

Defined in: [WAProto/index.d.ts:6579](https://github.com/WhiskeySockets/Baileys/blob/master/WAProto/index.d.ts#L6579)

***

### encHandle?

> `optional` **encHandle**: `null` | `string`

Defined in: [WAProto/index.d.ts:6588](https://github.com/WhiskeySockets/Baileys/blob/master/WAProto/index.d.ts#L6588)

***

### fileEncSha256?

> `optional` **fileEncSha256**: `null` | `Uint8Array`\<`ArrayBufferLike`>

Defined in: [WAProto/index.d.ts:6578](https://github.com/WhiskeySockets/Baileys/blob/master/WAProto/index.d.ts#L6578)

***

### fileLength?

> `optional` **fileLength**: `null` | `number` | `Long`

Defined in: [WAProto/index.d.ts:6576](https://github.com/WhiskeySockets/Baileys/blob/master/WAProto/index.d.ts#L6576)

***

### fileSha256?

> `optional` **fileSha256**: `null` | `Uint8Array`\<`ArrayBufferLike`>

Defined in: [WAProto/index.d.ts:6575](https://github.com/WhiskeySockets/Baileys/blob/master/WAProto/index.d.ts#L6575)

***

### fullHistorySyncOnDemandRequestMetadata?

> `optional` **fullHistorySyncOnDemandRequestMetadata**: `null` | [`IFullHistorySyncOnDemandRequestMetadata`](/proto-reference/Message/interfaces/IFullHistorySyncOnDemandRequestMetadata)

Defined in: [WAProto/index.d.ts:6587](https://github.com/WhiskeySockets/Baileys/blob/master/WAProto/index.d.ts#L6587)

***

### initialHistBootstrapInlinePayload?

> `optional` **initialHistBootstrapInlinePayload**: `null` | `Uint8Array`\<`ArrayBufferLike`>

Defined in: [WAProto/index.d.ts:6585](https://github.com/WhiskeySockets/Baileys/blob/master/WAProto/index.d.ts#L6585)

***

### mediaKey?

> `optional` **mediaKey**: `null` | `Uint8Array`\<`ArrayBufferLike`>

Defined in: [WAProto/index.d.ts:6577](https://github.com/WhiskeySockets/Baileys/blob/master/WAProto/index.d.ts#L6577)

***

### messageAccessStatus?

> `optional` **messageAccessStatus**: `null` | [`IHistorySyncMessageAccessStatus`](/proto-reference/Message/interfaces/IHistorySyncMessageAccessStatus)

Defined in: [WAProto/index.d.ts:6589](https://github.com/WhiskeySockets/Baileys/blob/master/WAProto/index.d.ts#L6589)

***

### oldestMsgInChunkTimestampSec?

> `optional` **oldestMsgInChunkTimestampSec**: `null` | `number` | `Long`

Defined in: [WAProto/index.d.ts:6584](https://github.com/WhiskeySockets/Baileys/blob/master/WAProto/index.d.ts#L6584)

***

### originalMessageId?

> `optional` **originalMessageId**: `null` | `string`

Defined in: [WAProto/index.d.ts:6582](https://github.com/WhiskeySockets/Baileys/blob/master/WAProto/index.d.ts#L6582)

***

### peerDataRequestSessionId?

> `optional` **peerDataRequestSessionId**: `null` | `string`

Defined in: [WAProto/index.d.ts:6586](https://github.com/WhiskeySockets/Baileys/blob/master/WAProto/index.d.ts#L6586)

***

### progress?

> `optional` **progress**: `null` | `number`

Defined in: [WAProto/index.d.ts:6583](https://github.com/WhiskeySockets/Baileys/blob/master/WAProto/index.d.ts#L6583)

***

### syncType?

> `optional` **syncType**: `null` | [`HistorySyncType`](/proto-reference/Message/enumerations/HistorySyncType)

Defined in: [WAProto/index.d.ts:6580](https://github.com/WhiskeySockets/Baileys/blob/master/WAProto/index.d.ts#L6580)