Distribution rule for operation level cost orders not supported

What causes this issue?

Operations of operation level cost orders cannot be settlement
receivers. This means that distribution rules are not possible for
operations.

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 be able to release the order, define a different settlement rule in
customizing.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.