There are no cost component groups in this BOM

What causes this issue?

You are attempting to display costs split according to cost component
groups. This is not possible because the cost components have not yet
been assigned to any cost component groups.

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?

To define <ZH>cost component groups</>, go into Customizing and do the
following:
Create cost component groups for most critical cost pools.
Assign the cost component groups to the existing cost components.

Error message extract from SAP system. Copyright SAP SE.