No entry selected

What causes this issue?

On the current screen, you can see a list of data records in a table
whose individual entries can be selected. The function that you have
just triggered requires that at least one of these entries is selected.
This, however, is not the case.

System Response

The system cannot carry out the desired function as it cannot determine
the data record to which the function is referring.

How to fix this error?

Select one or more entries and carry out the function again.

Error message extract from SAP system. Copyright SAP SE.