Endpoint
Authentication
This endpoint requires authentication via API key. Include your API key in theX-API-Key header:
Path Parameters
Request Body
The request body must be a JSON object with the following fields:Required Fields
File Object Fields
Request Example
Response
Success Response
Status Code:200 OK
Response Fields
Error Responses
401 Unauthorized
Returned when authentication fails. See the authentication errors section for details.404 Not Found
Returned when the task doesn’t exist or you don’t have access to it.409 Conflict
Returned when the task is not at a signature step or the document cannot be attached in the current state.422 Validation Error
Returned when the request body is invalid.500 Internal Server Error
Returned when the upload fails due to a server error.Notes
Use this endpoint when a document is signed outside Chamelio (for example, a manually signed PDF) and you need to attach the executed copy to the signature step.
Use Cases
This endpoint is useful for:- Manual signing flows - Attach wet-signed or externally signed documents to a task
- Third-party signature providers - Record the executed document from a provider not integrated with Chamelio
- Audit completeness - Ensure the final signed copy is stored against the workflow step