Solution : https://service.sap.com/sap/support/notes/1617415 (SAP Service marketplace login required)
Key words :
runtime error convt_no_numberwith exception cx_sy_conversion_no_number, st-ser 701_2010_1 sp10, apply service content update, service content update, /1ags/aea_apo_lc___________026 reason, /1ags/aea_apo_lc___________026, earlywatch alert, form action_015, solution implement, correction instruction