Key figure &: Invalid time-based aggregation/disaggregation rule

What causes this issue?

An invalid time-based disaggregation type has been defined for at least
one planning area key figure.
The following settings are not permitted:
The time-based disaggregation type of the key figure that is used does
not exist (valid are 'P', 'E', 'N', 'L', or 'K')
A key figure A is disaggregated on a time basis using another key
figure B (time-based disaggregation type 'K')
No key figure B has been assigned, however, in the corresponding field
Key figure B is not used in the planning area
Key figure A or key figure B are not time series key figures
A key figure A is not disaggregated on a time basis using another key
figure (time-based disaggregation types 'P', 'E', 'N or 'L'), but a key
figure is assigned in the field for the disaggregation key figure
A key figure with time-based disaggregation type 'N', 'E' or 'L' 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 time-based disaggregation type.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.