Key figure &: Invalid aggregation/disaggregation rule

What causes this issue?

An invalid aggregation/disaggregation rule has been defined for at
least one planning area key figure.
The following settings are not permitted:
The calculation type of the key figure that is used does not exist
(valid are 'S', 'P', 'A', 'N', or'I')
A key figure A is disaggregated using another key figure B (calculation
type 'P' or 'I')
No key figure B has been assigned, however, in the 'disaggregation key
figure' field
Key figure B is not used in the planning area
Key figure A and key figure B are not time series key figures and also
do not lie in the same InfoCube
A key figure A is not disaggregated using another key figure
(calculation type 'S', 'A' or 'N'), but a key figure is assigned in the
'disaggregation key figure' field
The key figure has the calculation type 'A' (average calculation) and
can be fixed

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

System Response

The planning area is not created or changed.

How to fix this error?

Check the aggregation/disaggregation rules.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.