Dynamics Community Forum Thread Details

Trying to Upload a Document using Business Central API

Hi Team,
We are trying to attach PDF documents to both Purchase Invoices using the standard Business Central Document Attachments API.

The process consists of two steps:

Create a record in the standard documentAttachments entity.

Upload the PDF content using the attachmentContent endpoint.
The attachment record is created successfully, and the upload request returns HTTP 204 (No Content). However:

The PDF is not attached correctly to the Purchase Invoice.

An Incoming Document record is created.

Downloading the attached document results in a corrupted PDF that cannot be opened
The request body to create attachment record is

{
"fileName": "abc.pdf",
"ParentType": "Purchase Invoice",
"Parent Id": "1234-12345-2434".
}

Whereas for uploading the file content I am using PATCH method with uri as https://api.businesscentral.dynamics.com/v2.0/{tenant}/{environment}/api/v2.0/companies({companyId})/documentAttachments({attachmentId})/attachmentContent
and send the file content from SharePoint for the request body with expression as "body('Get_file_content')?['$content']".

Thank you!