Re-sorted objects inserted at the end of the list

What causes this issue?

You have selected entries. The entries are inserted at the cursor. If
the cursor is not on a valid line, the entries are added to the end of
the list.

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?

Error message extract from SAP system. Copyright SAP SE.