Split order &1 cannot be archived

What causes this issue?

You want order &V1& to be archived. This order is a split order to
which further split orders belong. A split order can only be archived
if all the orders in the split hierarchy meet the following conditions:
The deletion indicator is set.
Retention period 2 has expired.
You have the appropriate authorization.

System Response

The order is not archived.

How to fix this error?

Check the conditions above and try to archive the order again.

Error message extract from SAP system. Copyright SAP SE.