080257 : This aggregation method for the selcted field must be set to 'SUM'. Please select another field.

Description

When using this tool you cannot select demographic or data variables that cannot be summed up logically. Example: Adding up the values of median values is not mathmatically correct. You would need to sum up all geographies that intersect your trade area and then recalculate the bases of the medians and recompute the final median. These tools do not perform that function.

Solution

Select demographic or data variables that can be summed up.