# validatePieceSizes

> **validatePieceSizes**(`pieceSizes`): `void`

Defined in: [packages/synapse-core/src/utils/pdp-size.ts:41](https://github.com/FilOzone/synapse-sdk/blob/be109459b3ce23e76e3fc606d809ae47209fe3d3/packages/synapse-core/src/utils/pdp-size.ts#L41)

Validate known raw piece sizes.

## Parameters

| Parameter | Type | Description |
| ------ | ------ | ------ |
| `pieceSizes` | readonly `bigint`[] | Raw payload size of every piece, in bytes |

## Returns

`void`

## Throws

ValidationError when the list is empty or contains a non-positive size