If you need to request files from a 3rd party (not your client) you can request them using the File share feature on Box’s platform.
https://scribehow.com/embed/Create_a_File_Request_Link_in_Box_for_3rd_parties__cytUoV2gQiOEzyn6M6aXUg?as=scrollable
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Note - you can preview what the link would look like after the link is created. But it should look like this to whoever you send the File request link to!

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