Errors in foreign key dependencies!

What causes this issue?

Either (1) there are no entries in the tables associated with the
organizational object, or (2) the check table concerned does not
contain key record for the tables. The first kind of error is indicated
by a red cross in the log for the "Check" action; the second kind is
indicated in the log by a yellow lightning symbol.

System Response

The system creates an error log.

How to fix this error?

Display the log (choose Extras -> Technical logs -> Check results) to
gain an overview of the missing table entries. If necessary, you can
enter missing entries manually using the table maintenance transaction.
Do not do this for the original system OrgUnits, but on copies of them.
There is not further effect on functionality.

Error message extract from SAP system. Copyright SAP SE.