Combination of some statuses are not allowed

What causes this issue?

While you are allowed to select a combination of statuses for a status
ID, the following combinations are not allowed:
<LS>Initial </>cannot be selected along with <LS>Period-End Forecast
(Start) </>or<LS> Period-End Forecast (End)</>.
<LS>Period-End Forecast (Start) </>cannot be selected along with
<LS>Initial </>or<LS> Period-End Forecast (End)</>.
<LS>Period-End Forecast (End) </>cannot be selected along with
<LS>Initial </>or<LS> Period-End Forecast (Start)</>.

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

System Response

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.