---
title: "Add supporting attachments to a Workflow."
method: POST
path: "/api/AddAttachments"
tags: ["Workflows"]
---

# Add supporting attachments to a Workflow.

`POST /api/AddAttachments`

## Headers

- `Authorization` string, required
- `UserName` string

## Request body

- EmsignerAPIBusinessObjectAttachDocumentInput — Name of the attachment
  - `AttachmentName` string, required — Name of the attachment
  - `Description` string — Description
  - `Base64FileData` string, required — base64 string format of the document file
  - `ParentDocumentID` integer — first document in a multi document workflow (fetched using GetWorkflowInfo)
  - `Password` string

## Response `200`

OK

- EMDMSHelperReturnObjectSystemString
  - `IsSuccess` boolean
  - `Messages` string[]
  - `ErrorCode` integer
  - `Response` string

---

[API](https://skmtc.dev/emsigner/apis/emsignerapi.md) · [All operations](https://skmtc.dev/emsigner/apis/emsignerapi/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/emsigner/emsignerapi/revisions/7d5d55e0d91d/schema)