Solution : https://service.sap.com/sap/support/notes/853412 (SAP Service marketplace login required)
Key words : 
net price pricing unit, spcitembeans method getnetpricepricingunit, crm mobile reason, crm mobile scenario, latest patch level, running ipc 4, prerequisites
Related Notes : 
       
| 486061 | How to get patches for CRM Internet Pricing Configurator |