# addPieces

> **addPieces**(`options`): [`Promise`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Promise)\<[`ReturnType`](/reference/filoz/synapse-core/sp/namespaces/addpieces/type-aliases/returntype/)\>

Defined in: [packages/synapse-core/src/sp.ts:689](https://github.com/FilOzone/synapse-sdk/blob/32f86959b0bf15557657ea412e31a0897440ca98/packages/synapse-core/src/sp.ts#L689)

Add pieces to a data set on the PDP API.

POST /pdp/data-sets/{dataSetId}/pieces

## Parameters

| Parameter | Type | Description |
| ------ | ------ | ------ |
| `options` | [`OptionsType`](/reference/filoz/synapse-core/sp/namespaces/addpieces/type-aliases/optionstype/) | [addPieces.OptionsType](/reference/filoz/synapse-core/sp/namespaces/addpieces/type-aliases/optionstype/) |

## Returns

[`Promise`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Promise)\<[`ReturnType`](/reference/filoz/synapse-core/sp/namespaces/addpieces/type-aliases/returntype/)\>

Hash and status URL [addPieces.ReturnType](/reference/filoz/synapse-core/sp/namespaces/addpieces/type-aliases/returntype/)

## Throws

Errors [addPieces.ErrorType](/reference/filoz/synapse-core/sp/namespaces/addpieces/type-aliases/errortype/)