Describes the cause and action for error messages.
Error Message(English)：
pivot table cannot group time
Grouping Pivot Table Data. How to Group so you don't get: Cannot ...
https://www.ozgrid.com/Excel/grouping-pivot-tables.htm
microsoft excel - "Cannot group that selection" error when ...
https://superuser.com/questions/484616/cannot-group-that-selection-error-when-creating-pivot-table
Excel 2010 Pivot table Grouping by days of week
https://superuser.com/questions/1290862/excel-2010-pivot-table-grouping-by-days-of-week
pivot table - Cannot group field in Excel ...
https://superuser.com/questions/1263925/cannot-group-field-in-excel-pivottable
Excel - pivot table does not group dates
https://superuser.com/questions/1125762/excel-pivot-table-does-not-group-dates
timestamp - grouping by date in excel and ...
https://superuser.com/questions/141178/grouping-by-date-in-excel-and-removing-time-in-a-pivot-table
How to Group Excel Pivot Table Data - Contextures
https://www.contextures.com/xlPivot07.html
Grouping by Date Adds ...
https://www.contextures.com/xlPivot07.html#videoextra
Grouping Text Items
https://www.contextures.com/xlPivot07.html#grouptext