Upload Attachment Chunk

UploadAttachmentChunk uploads one chunk of an attachment, for files sent in parts rather than in a single request.

It calls PUT https://dev.azure.com/{organization}/{project}/_apis/wit/attachments/{id}, where {id} is the value of the Id field.

The activity has four tabs: Configuration, Auth, Input, and Output.

Configuration

Field	Required	Description
Name	Optional	Name of the step, should be unique within this workflow.
Description	Optional	Describe the purpose or function of this step.
Api Version	Required	Enter the version of the API to use.
Organization	Required	Enter the organization identifier.
Project	Required	Enter the project identifier.
Id	Required	Enter the ID of the resource.
Content Range Header	Required	Enter the content range header value for the request.
File Name	Optional	Enter the name of the file to be processed.

Content Range Header is required and identifies which byte range of the file this chunk carries. File Name is a query parameter.

Auth

Field	Required	Description
Auth Type	Optional	Select the authentication method for the request. Options: No Auth, Basic, API Key, OAuth 2.
User Name	Optional	Username for Basic Authentication.
Password	Optional	Password for Basic Authentication.

Input

This activity is built on the REST Client, so the Input tab is the generic HTTP request rather than an Azure Boards-shaped payload.

Field	Required	Data Type	Description
Target	Required	Object	The HTTP request.

The chunk content goes in the request body.

Output

The activity returns an httpResponse object.

Field	Data Type	Description
status.code	Integer	Numeric HTTP status code.
status.message	String	Short message associated with the HTTP status.
headers	Object	HTTP response headers.
body	Object	Parsed body of the response — the attachment reference.

The response body carries the attachment reference:

Field	Data Type	Description
id	String	The attachment identifier.
url	String	REST URL for the attachment.