When trying to activate a Mo.net product by using the Mo.net Licence Manager, you may sometimes get a "5013" error code.
This indicates that their are no more activation keys left for this license. The user has used up the allowed number of activations.
Visit Software Alliance - Redefining Financial Modelling Software
Login and navigate to Support, on the dropdown menu click on the Licence Manager.
You will be able to see the number of activations left and also deactivate unused activated Licence.
Or
Contact Software Alliance Limited Helpdesk.