post https://app.pennylane.com/api/external/v2/file_attachments
Upload a file to attach to any resource that provides a file_attachment_id:
- Customer Invoice
- Supplier Invoice
- Credit Notes
The maximum allowed file size is 100MB.
Note that this will not upload a file into the DMS (GED).
This endpoint requires one of the following scopes:
file_attachments:all