Solution : https://service.sap.com/sap/support/notes/654976 (SAP Service marketplace login required)
Key words :
function group ehu2 screen 100 select gui status change, p0210-pernr q0210_ess-subtype return lock_flag, group/function tab add enter, itab perform fill_itab tables itab, display important text messages, include lehu2u01 add, standard ess scenarios, prerequisites program error, module check_taxlevel input, yellow arrow icon
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