Old entry for cost elements &3-&4 was discarded (see long text)

What causes this issue?

An entry should be inserted for revaluation &v1&, but this does not
match cost element group &v2&, which is set up for this revaluation.
Possible causes:
You are currently creating a revaluation with reference.
Since this reference was created, the cost element group has changed.
The old entries cannot be take over.
You are saving a revaluation.
The cost element group has changed since the last time you saved this
reevaluation. Thus, the old entries cannot be resaved.
The old entry was for the intervall &v3& to &v4&. If you have created
new values for these cost elements, they were saved.

System Response

The old, incorrect entry is not saved.

How to fix this error?

Check whether revaluation &v1& contains the necessary data.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.