The initial release of SAP Customer Activity Repository required the presence of a source SAP ERP system to provide master data, multichannel transactions, and inventory data.
As of SAP Customer Activity Repository 2.0, it is possible to implement a landscape comprised of a third-party ERP system. Doing so requires a separate project that should be carried out by consultants who are experienced with SAP HANA as well as with SAP Customer Activity Repository and its business scenarios.
A new Quick Starter for Third-Party ERP Integration is available on the SAP Help Portal at http://help.sap.com -> Integration Information -> Quick Starter for Third-Party ERP Integration. Note that you must have a valid SAP Service Marketplace ID to access the document.