If you registered a default which your customer has later paid, you must edit the entry to advise that the debt has been paid. To do so, click 'Defaults' from the dashboard.
Click on the payment default from the list that you wish to register
Click on the payment default on the company's profile. Then click 'Approved.'
You will be taken to the 'Edit Document' screen. Under the 'Has debt been paid?' tab, select 'yes.' Then click on the 'Update document' button.