The file does not contain any macros. Otherwise, it might be a one-time glitch. Custom Calculations enable you to add many semi-standard calculations to a pivot table. Can someone please point out the reason and possible solutions? Hello, I am trying to add sum and a count w/in the pivot table but the custom field is disabled. Chose suitable field names to join with your main table. To quickly display or hide the current subtotal, right-click the item of the field, and then select or clear the check box next to Subtotal "