# Canceling a Multipart Upload Task

#### Functions

You can perform this operation to abort a multipart upload. You cannot upload or list parts after operations to merge parts or abort a multipart upload are performed.

#### Request Syntax

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    DELETE /ObjectName?uploadId=uplaodID HTTP/1.1
    Host: bucketname.obs.region.example.com
    Date: date
    Authorization: auth

#### Request Parameters

This request uses message parameters to specify the multipart upload task number of the segment task. Table 1 describes the parameters.

Table 1 Request parameters
Parameter | Description | Mandatory
--- | --- | ---
uploadId | Indicates a multipart upload. Type: string | Yes

#### Request Headers

This request uses common headers. For details, see Table 3.

#### Request Elements

This request involves no elements.

#### Response Syntax

    HTTP/1.1 status_code
    Date: date

#### Response Headers

The response to the request uses common headers. For details, see Table 1.

#### Response Elements

This response involves no elements.

#### Error Responses

1. If the AK or signature is invalid, OBS returns 403 Forbidden and the error code is AccessDenied.
2. If the requested bucket does not exist, OBS returns 404 Not Found and the error code is NoSuchBucket.
3. If you are neither the initiator of a multipart upload nor the bucket owner, OBS returns 403 Forbidden.
4. If the operation is successful, OBS returns 204 No Content to the user.

Other errors are included in Table 2.

#### Sample Request

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    DELETE /object02?uploadId=00000163D46218698DF407362295674C HTTP/1.1
    User-Agent: curl/7.29.0
    Host: examplebucket.obs.region.example.com
    Accept: */*
    Date: WED, 01 Jul 2015 05:28:27 GMT
    Authorization: OBS H4IPJX0TQTHTHEBQQCEC:QmM2d1DBXZ/b8drqtEv1QJHPbM0=

#### Sample Response

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    HTTP/1.1 204 No Content
    Server: OBS
    x-obs-request-id: 8DF400000163D463E02A07EC2295674C
    x-obs-id-2: 32AAAQAAEAABAAAQAAEAABAAAQAAEAABCTp5YDlzn0UgqG3laRfkHLGyz7RpR9ON
    Date: WED, 01 Jul 2015 05:28:27 GMT

Parent topic: Operations on Multipart Upload