SAP Message /SAPBOQ/SRVPACK047 - Cannot change line number &1 for &2 without changing subitem line number

Diagnosis You want to change the line number &V1& (EXT_LINE) of main item &V2&without changing the line number of all assigned subitems. Procedure If you change the line number &V1& (EXT_LINE) of the main item &V2&,you have to change the line number &V1& (EXT_LINE) of all assignedsubitems too.