SAP Message RSR_EXCEL_RUNTIME_DE008 - New rows are not permitted since columns contain two structures

Diagnosis
New rows can only be entered in the current query view when values are u
pdated or there is no longer a structure drilled down in the columns.

System Response
New rows cannot be entered.

Procedure
To enter new rows, change the drilldown so that there is only one struct
ure in the columns.