Down load Isheet attachments

27284

https://collaborate.highq.com/sitepoint/viewWikiPage.action?metaData.siteID=714&metaData.wikiID=26415

 

We have been trying to download using Documentation in link above.

 

I see others commenting they either get "403 Forbidden Error" or when they change accept/header to application/octet-stream they get a 500 Error. We have same issues and can't see resolution. 

Does anyone have a note of what a valid request looks like and if it works?