Solution : https://service.sap.com/sap/support/notes/519453 (SAP Service marketplace login required)
Key words : 
symptom method getdbexternalid, product id reason, interface ispcproduct, prerequisites ipc 3, 0 support package 9, source code, support package 07, software center, note 486061
Related Notes : 
       
| 486061 | How to get patches for CRM Internet Pricing Configurator |