Characteristics combination was read from &2, not &1

What causes this issue?

The characteristics combinations were read from the wrong aggregate.

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?

Check the characteristics combinations in this aggregate. The
characteristics combinations should be correctly aggregated in the
aggregate. See note 503363 on how to create characteristics combinations
correctly.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.