Solution : https://service.sap.com/sap/support/notes/1640546 (SAP Service marketplace login required)
Key words :
sap note assistant, relevant support package, message texts, t100 messages, transport log, dialog box, transport interface, message text, terms trint_put_vars_into_line, message reason
Related Notes :
1591120 | CSOL: Inconsistency in non-SAP GUI application scenario |