Solution : https://service.sap.com/sap/support/notes/591787 (SAP Service marketplace login required)
Key words :
message application form <xyz>, client copy completely, application data, message id, client copy, postprocessing phase, termination occurs, exit efg_form_cc_exit_after, system displays, terms efg_form_cc_exit_after
Related Notes :
560552 | CC-INFO: Restart and "Copy error" |
491923 | CC RELEASE: Client copy errors in Release 6.20 |