How To Fix KH603 - Aggregation over periods is not allowed for the characteristic "&1"

KH603 - Overview

• Message type: E = Error

• Message class: KH - CO-PA Reporting

• Message number: 603

• Message text: Aggregation over periods is not allowed for the characteristic "&1"

What causes this issue?

For this characteristic, you specified an aggregation rule that
requires a reference field for aggregation over periods (either
"Average weighted by calendar days" or "Average weighted by factory
calendar days). This reference field is used to determine the calendar
or factory calendar.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Change the definition of the key figure so that the reference field is
compatible with aggregation over time (such as "Fiscal year/period").

Error message extract from SAP system. Copyright SAP SE.

KH603 - Details

• The SAP error message KH603, which states "Aggregation over periods is not allowed for the characteristic '&1'", typically occurs in the context of SAP's CO-PA (Controlling-Profitability Analysis) or other reporting tools when there is an attempt to aggregate data over time periods for a characteristic that does not support such aggregation.
  
  Cause:
  
  Characteristic Restrictions: The characteristic specified in the error message (represented by "&1") is not designed to be aggregated over time periods. This is often the case for characteristics that are not time-dependent or do not have a defined aggregation logic.
  Data Model Design: The data model or the configuration of the InfoObject may not allow for aggregation over certain periods due to the way the data is structured or the business logic defined in the system.
  Query Design: The query or report being executed may be incorrectly designed, attempting to aggregate data in a way that is not supported by the underlying