Created by Jerry Wang on Apr 01, 2014
试图保存一个business transaction时, method check_popup_to_raise 会检查当前是否存在导致弹出popup window提示end user的error message。此类error message会终止transaction的save process.
当且仅当一个message的navigation 属性被设置且在system table CRMC_MESSAGES_S里存在对应的entry且其AUTO_EXEC 字段设置为abap_true时，才会弹出popup window并且阻止save: