For the scenario ERP Document several security mechanisms are available.
Note that the URL exposed in the ‘File’ entity is not supported in a reverse proxy landscape. Being internal, the document URL could be neither accessed behind the proxy nor mapped by the SAP Gateway system
For more information on the SAP Content Server, see the SAP NetWeaver documentation about SAP Content Server.
For more information on the SAP Content Server Interface, see the SAP NetWeaver documentation about SAP Content Server HTTP 4.5 Interface.