AT SELECTION-SCREEN OUTPUT.

  LOOP AT SCREEN.     IF p_gre = 'X'.       IF screen-name = 'P_BUK' OR screen-name = 'SE_EKG-LOW'. " 公司代码/采购组上线必输         screen-required = '2'.         MODIFY SCREEN.         CLEAR: se_eko[]. " 清空采购组织       ENDIF.     ENDIF.     IF p_alv = 'X'.       IF screen-name = 'P_BUK' OR screen-name = 'SE_EKO-LOW'. " 公司代码/采购组织上线必输         screen-required = '2'.         MODIFY SCREEN.         CLEAR: se_ekg[]. " 清空采购组       ENDIF.     ENDIF.   ENDLOOP.