Solution : https://service.sap.com/sap/support/notes/586664 (SAP Service marketplace login required)
Key words :
'ipc session invalid'long text, what_to_dothe pricing data transferred, system_responsewhat_to_dothe pricing data transferred, attached source code corrections, open message class prc_messages_ext, prior support package level, error message 'ipc error, invalid session ids, ipc error message, causean ipc error
Related Notes :
572998 | Error handling: Saving of pricing document fails |