Pivot table reports have limitations that you must be aware of. Although some of these limitations remain constant regardless of available system memory, others are dependent on available system memory:
The number of row fields you can place in a pivot table is only limited by available memory.
Starting with Excel 2003, the number of unique items in a row field is limited to 32,500. Prior Excel versions have a limit of 8,000 unique row items in a row field.
You can have no more than 256 column fields (may be limited by available memory).
Starting with Excel 2003, the number of unique items in a column field is limited to 32,500. Prior Excel versions have a limit of 8,000 unique column items in a column field.
You can have no more than 256 page fields (may be limited by available memory).
Starting with Excel 2003, the number of unique items in a page field is limited to 32,500. Prior Excel versions have a limit of 8,000 unique page items in a page field.
You can have no more than 256 data fields.
The number of calculated items you can use in a pivot table is only limited by available memory.
The number of pivot table reports on a spreadsheet is only limited by available memory.