External candidates users

Dear E-Rectruiting experts,

We are implementing SAP ERC,but we'll use backend functionalities only:candidates will continue to use actual web site and their data will be

sent to SAP by an interface. As a consequence, we don’t need SAP users for these BP.

Please, could you suggest how can we avoid to create SAP users for external candidates ?

These users should be delete asap.

Thank you very much.

Elena