Solution : https://service.sap.com/sap/support/notes/368074 (SAP Service marketplace login required)
Key words : 
'start' button -> 'programs' -> 'sap internet pricing, jar tf <path>\ipcpatch, normal windows service manager, symptom ipc development support, common zip programs, configurator' -> 'service manager', 0c support package 3, 0c support package 4, including mobile sales, suitable zip program
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| 553644 | |
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| 549567 | |
| 549367 | |
| 541107 | |
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| 492015 | IPC: Internal error during hierarchy access | 
| 486061 | How to get patches for CRM Internet Pricing Configurator | 
| 483681 | Problems with numeric product IDs in the IPC |