Solution : https://service.sap.com/sap/support/notes/750207 (SAP Service marketplace login required)
Key words : 
existing i_ta_valsid importing parameter, 10 content            import support package 17, 0b            import support package 23, i_set_table_lock importing parameter, rrsi_sidflags_set function module, fully implemented automatically, 50            import support package 05, 1 content support package 17, 0b support package 23, lock escalation reason
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