For which purpose can you use light account in SAP Ariba Buying and Invoicing?

To create user accounts automatically when they are needed by integrating with an LDAP system

To simplify the configuration process for SAP Ariba Buying and Invoicing to reduce the total implementation time to roughly half of a standard setup

To send purchase orders over Ariba Network to suppliers who have NOT yet registered

To reduce the number of steps necessary for suppliers to upload catalogs to Ariba Network by using CIF templates