Select at least one processing status

What causes this issue?

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?

Select at least one of the processing statuses that are shown in the
selection screen.

How can this happen?

When selecting maintenance notifications, you can select, for example,
the fields:
outstanding
postponed
in process
completed

Error message extract from SAP system. Copyright SAP SE.