When is this a problem?
This is a problem in all models. During a model build, lists are organized in the way that they are added.
Why is this a problem?
Through research, we discovered that dimensions that are not in order can make the engine work harder.
How to correct:
On the Modules pane (Model Settings>Modules) look for lists that are not in order in the Applies To column. Click the Applies To row that you want to re-order, then click the ellipsis. In the Select Lists dialog, click OK. In the Confirm dialog, click OK.
Questions on this topic? See Are the dimensions in order? in our Model Optimization Checklist forum.