Reference order & is part of a configurable collective order

What causes this issue?

Reference order &V1& is part of collective order &V2&. Collective order
&V2& can be configured.

System Response

Configurable collective orders can only be copied completely. You
cannot copy a configurable subtree.

How to fix this error?

You can only use the whole collective order as a reference.

Error message extract from SAP system. Copyright SAP SE.