How To Connect Multiple SAP xPD Systems to a Single SAP EP
SAP xPD stores attachments in SAP Knowledge Management and Collaboration (SAP KMC), which is part of SAP EP. SAP xPD also exposes its data (including attachments) in SAP KMC, so that it can be indexed and searched by SAP Search and Classification (SAP TREX). All this is done via the SAP Composite Application Framework (SAP CAF) layer of SAP xPD. When you are configuring SAP EP for use with SAP xPD, you are actually configuring SAP CAF.