You cannot scroll on the following day

What causes this issue?

You cannot scroll through the next day, either because it does not fall
within the selected planning period, or because no data is available in
the Day View for this particular day.

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.