This API is extremely reliable and will not be broken unless absolutely necessary.
Method
POST
Path
/qrs/sharedcontent/{id}/uploadfile?externalpath={externalpath}
Description
Upload a file to a shared content entity, identified by {id}. The file is saved as the name specified by the externalpath parameter (for example, my/file/path/example.png). Include the Content-Type header that corresponds to the type of file you are uploading. If a file with the same externalpath already exists it will be automatically overwritten.
When you upload a file to a shared content entity, QRS generates a child StaticContentReference entity that contains the mapping between the external path and the physical file in the repository. To retrieve a file from the shared content entity identified by {id}, make a request of the following format:
GET qrs/sharedcontent/{id}/my/file/path/example.png
You must have update access to the shared content entity to upload files to it.
Body
File contents (as binary).
Return value
The external path to the uploaded content (for example, "my/file/path/example.png").
Optional parameters
-