Define a settlement cost element for &/&/&

What causes this issue?

When planning a record for the first time in secondary order cost
planning, you must define a settlement cost element. You have not yet
done so for the above combination.

System Response

The changed records cannot be updated.

How to fix this error?

Define a settlement cost element for the above combination using the
function "Edit", "Control data...", and then post the data again.

Error message extract from SAP system. Copyright SAP SE.