Cost center &2 that was derived from &1 is to be deleted

What causes this issue?

You made a posting to a <ZH>statistical</> order or a <ZH>statistical
</> project (&V1&). The system used this object to derive cost center
&V2& as a <ZH>true</> account assignment object. Then you changed or
deleted <ZH>statistical</> account assignment object &V1&.

System Response

If you change or delete the statistical order or statistical project,
the system deletes the derived cost center to avoid inconsistencies.
If a CO account assignment object does <ZH>not exist</>, then the
system issues error message <DS:NA.KI235>KI235</>.

How to fix this error?

The system does not allow you make postings to cost center &V2& if it
is the <ZH>only account assignment object</>, and issues error message
KI235 for technical reasons. To avoid this, proceed as follows:
Enter any cost center other than the derived cost center &V2&
Choose <ZK>Enter</>
Change the cost center back to cost center &V2& as before.

Error message extract from SAP system. Copyright SAP SE.