Returns or sets the index number of the PivotTable cache. Read/write Long.
If you set the CacheIndex property so that one PivotTable report uses the cache for a second PivotTable report, the first report’s fields must be a valid subset of the fields in the second report.
This example sets the cache for the PivotTable report named "Pivot1" to the cache of the PivotTable report named "Pivot2."
Worksheets(1).PivotTables("Pivot1").CacheIndex = _
Worksheets(1).PivotTables("Pivot2").CacheIndex