Interim billing cannot be executed

What causes this issue?

Interim billing cannot be executed.
In the rate category, you specified that period-end billing has to be
executed. If you want to execute interim billing, the billing period of
the current interim billing must <ZH>not</> include the schedule record
of the next periodic billing.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.